The Uncertain Future of Small City Cars in Europe

Will the Peugeot 108 Make a Comeback?

The automotive landscape in Europe is undergoing a seismic shift, leaving the fate of beloved small city cars like the Peugeot 108 hanging in the balance. Once a staple of urban mobility, the A-segment has faced immense pressure from stricter emissions regulations and changing consumer preferences favoring SUVs and crossovers. The potential return of models such as the 108 is no longer just a business decision for manufacturers; it has become a litmus test for the future of affordable, compact urban vehicles on the continent.

Regulatory Hurdles and Market Forces

European Union policies are the primary force shaping this segment. Stringent CO2 emission targets and the massive investment required for electrification make developing a new, profitable mini-car exceptionally challenging. The economics are tough: the cost of advanced powertrains and safety technology is harder to absorb in a low-price vehicle. Consequently, many automakers have withdrawn from the segment to focus resources on larger, more profitable electric vehicles.

A Persistent Niche of Demand

Despite these challenges, a genuine demand for compact, efficient, and easy-to-park city cars persists. In dense urban environments across Europe, the practical advantages of a small footprint and low running costs remain highly relevant. This enduring need suggests a market opportunity, potentially for electric versions of these vehicles, if they can be offered at an accessible price point.

The Path Forward for Compact Cars

The future of models like the Peugeot 108 likely hinges on a combination of strategic decisions from Stellantis and the evolving regulatory framework. The potential development of a shared platform for affordable electric mini-cars across multiple brands could improve viability. Ultimately, the return of the small city car depends on aligning European environmental ambitions with the practical necessity of accessible urban transportation.

Norway’s Gas Car Sales Hit Record Low in 2025

Norway’s Electric Revolution Leaves Little Room for Gas Cars

The latest registration data from Norway solidifies its position as the undisputed global leader in electric vehicle adoption. Figures from November 2025 reveal a stunning milestone: over 97% of all new passenger cars registered in the country were 100% battery-electric vehicles (BEVs). This leaves a minuscule market share for traditional internal combustion engine cars, including petrol, diesel, and even non-rechargeable hybrids.

A Deliberate Path to Electrification

This historic low for fossil-fuel car registrations is not a coincidence but the result of a consistent and ambitious national strategy. For decades, Norway has implemented a powerful package of incentives designed to make electric vehicles the obvious choice for consumers. These include significant tax exemptions, reduced tolls and ferry fares, access to bus lanes in congested areas, and extensive charging infrastructure development. The policy framework has effectively made electric cars cheaper to buy and more convenient to own than their gasoline counterparts.

Beyond Passenger Cars: The Next Frontier

With the passenger car market rapidly electrifying, focus is now shifting to heavier transport segments. The Norwegian government and industry are increasingly targeting electric solutions for vans, trucks, and public transport. The success in the passenger vehicle sector provides a proven blueprint and generates crucial economies of scale for battery technology, which is essential for decarbonizing these more challenging modes of transport.

A Global Blueprint in the Making

Norway’s trajectory offers a compelling case study for other nations. It demonstrates that with a clear, long-term policy vision combining financial incentives and infrastructure support, a rapid transition away from fossil-fueled transportation is achievable. The near-total dominance of EVs in new car sales shows that consumer behavior can shift dramatically when the economic and practical advantages are aligned. The Norwegian model continues to inspire and inform climate and transport policies worldwide.

Volkswagen ID.Buzz Cargo Long Wheelbase Boosts Electric Van Utility

Extended Range and Capacity: The New Long ID.Buzz Cargo

Volkswagen Commercial Vehicles has significantly expanded the practicality of its electric van lineup with the introduction of a long-wheelbase version of the ID.Buzz Cargo. This move directly addresses a key demand from business users, filling a notable gap in the initial model range. The extended chassis, previously exclusive to the seven-seat passenger variant, now brings enhanced load space and versatility to the commercial electric vehicle segment.

Enhanced Practicality for Business Users

The primary advantage of the long-wheelbase ID.Buzz Cargo is its substantially increased cargo capacity. The extended body translates directly into a larger, more usable load area behind the driver’s cabin. This allows for greater volumetric capacity for tools, equipment, and parcels, making it a more viable option for a wider array of trades and delivery services. The vehicle maintains the iconic and friendly design of the ID.Buzz but now packages it with the serious utility professionals require.

Maintaining Electric Efficiency

Despite its larger dimensions, the long-wheelbase Cargo model is expected to retain the core electric powertrain benefits of its shorter sibling. Drivers can anticipate a similar driving experience with quiet, instant torque and zero local emissions, crucial for urban operations and low-emission zones. The vehicle is likely to support fast-charging capabilities, ensuring minimal downtime for businesses with demanding schedules. This combination of increased space and electric efficiency positions it as a compelling alternative to traditional diesel vans.

The arrival of the long-wheelbase ID.Buzz Cargo marks a strategic evolution for Volkswagen’s electric commercial vehicle ambitions. By offering a configuration that prioritizes cargo volume, it moves beyond niche appeal to challenge conventional vans in the burgeoning electric light commercial vehicle market. This development underscores the automotive industry’s shift towards providing viable, zero-emission solutions for every facet of commercial transport.

Electric Car News: Tesla’s Mystery Model & Rival Updates

Is Tesla’s “New” Car Really New?

The electric vehicle world is buzzing with speculation following Tesla’s latest announcement. The automaker has teased a “new” vehicle, but industry analysts suggest this may not be a ground-up creation. Instead, it appears to be a significant evolution of an existing platform, potentially a major refresh or a specific new variant. This strategy blurs the line between a model update and a new launch, raising questions about Tesla’s approach to refreshing its lineup in a highly competitive market.

Legacy Automakers Accelerate Their EV Plans

While Tesla captures headlines, traditional manufacturers are making decisive moves. Lexus is preparing to unveil a next-generation electric SUV, promising a blend of the brand’s renowned luxury with a dedicated EV architecture for improved performance and range. Meanwhile, the iconic Renault 5 is making a triumphant return, reimagined as a compact, affordable EV. Its retro-modern design and focus on urban mobility position it as a strong contender in the European market.

Hyundai and Jaguar Forge Ahead with Innovation

Hyundai continues to build on the success of its IONIQ series, with rumors pointing to an expansion of its high-performance N line into the electric sphere. This move would bring thrilling driving dynamics to zero-emission vehicles. On the luxury front, Jaguar is undergoing a radical transformation, phasing out its internal combustion engines to become an all-electric brand by 2025. The upcoming Jaguar models promise to combine sleek, modern aesthetics with cutting-edge technology, aiming to redefine British electric luxury.

The electric vehicle landscape is shifting rapidly, with each player employing distinct strategies. From Tesla’s iterative yet impactful updates to the bold, brand-defining transitions from legacy automakers, the competition is driving faster innovation and more choices for consumers worldwide.

1000 HP Electric Motors: The End of Traditional Rear Brakes?

How 1000-Horsepower Motors Are Replacing Rear Brakes

The future of high-performance braking may not involve brakes at all. A groundbreaking shift in electric vehicle (EV) design is seeing ultra-powerful electric motors, capable of delivering 1000 horsepower, take on a dual role. Beyond propulsion, these advanced motors are being engineered to function as highly efficient rear braking systems, potentially rendering conventional brake components obsolete.

The Power of Regenerative Braking

This revolution is powered by regenerative braking technology. In an electric vehicle, the motor can also act as a generator. When the driver lifts off the accelerator or applies the brakes, the system reverses the motor’s function. It captures the vehicle’s kinetic energy, converts it back into electrical energy, and feeds it into the battery. This process creates significant deceleration force directly at the wheels.

For internal combustion engine vehicles, slowing down wastes energy as heat through friction brakes. In contrast, regenerative braking recaptures that energy, extending range and reducing wear. In high-performance EVs with exceptionally powerful motors, the regenerative force can be so substantial that it handles the majority of everyday braking demands.

Axial Flux Motors: The Key to Braking Performance

The enabling technology behind this is the axial flux motor, championed by companies like UK-based YASA. Unlike traditional radial flux motors, axial flux designs are lighter, more compact, and offer superior torque density. This means a relatively small motor can produce immense power and, crucially for braking, generate very high levels of regenerative torque almost instantaneously.

This capability allows a 1000 HP axial flux motor to provide deceleration force powerful enough to manage most braking scenarios for the rear axle. The conventional friction brakes are relegated to a backup role for emergency stops or holding the vehicle at a standstill. This leads to reduced brake dust, lower maintenance, and significant weight savings—a critical factor for performance and efficiency.

Implications for Future Vehicle Design

The integration of motor and brake system opens new avenues for automotive engineers. With smaller or no traditional rear brake calipers and discs, designers can reimagine suspension geometry, wheel design, and aerodynamic underbodies. It represents a fundamental step toward more integrated, efficient, and simplified vehicle architectures, where one sophisticated component replaces multiple conventional ones.

DeLorean Aerodynamics: Can the Time Machine Hit 88 MPH?

Putting the Time Machine to the Test

For decades, fans have wondered about the engineering behind the most famous car in cinematic history. A new interactive 3D model now allows for a detailed aerodynamic analysis of the Back to the Future DeLorean, simulating its performance in a virtual wind tunnel. This digital experiment goes beyond the flux capacitor to answer a fundamental question: could its iconic design actually handle the legendary 88 mph time-travel threshold?

A Design Built for Drama, Not Drag

The initial findings reveal significant aerodynamic challenges. The DeLorean DMC-12’s iconic stainless steel body, featuring sharp angles, gull-wing doors, and a flat front end, creates considerable aerodynamic drag. The model shows turbulent airflow separation around the front bumper and wheel wells, generating drag that would require substantial power to overcome. The famous louvered rear engine cover also presents a complex airflow scenario, potentially creating a low-pressure zone that increases resistance.

The Power of Movie Magic

This analysis highlights the stark difference between cinematic fantasy and automotive engineering. While the film’s Mr. Fusion and plutonium reactor provided fictional power, a stock DeLorean’s underpowered V6 engine struggled against its own shape. The virtual tunnel data suggests reaching 88 mph would demand significantly more horsepower in reality to counteract the poor drag coefficient. This makes Doc Brown’s modifications seem all the more necessary.

An Icon Beyond Physics

Ultimately, this aerodynamic scrutiny does nothing to diminish the car’s legendary status. It instead reinforces that the DeLorean was designed as a visual symbol of the future—a rolling piece of sculpture. Its aerodynamic inefficiency is part of its unique character, a testament to an era of bold, angular design. The analysis provides a fascinating scientific perspective on a cultural icon, proving that some legends are built more for the silver screen than for the speedometer.

Lando Norris Seals 2025 F1 Title in Dramatic Abu Dhabi Finale

The Unlikely Champion Claims His Crown

The 2025 Formula 1 World Championship concluded in breathtaking fashion under the floodlights of the Yas Marina Circuit. In a finale that will be remembered for decades, McLaren’s Lando Norris secured his first drivers’ title, defeating the reigning champion Max Verstappen in a season-long duel defined by razor-thin margins and intense psychological warfare. This victory marks a seismic shift in the sport’s hierarchy, crowning a new king after years of Verstappen and Red Bull dominance.

A Season Forged in Early Fire

The battle lines were drawn from the opening rounds. Norris’s narrow victory over Verstappen at the Australian Grand Prix in March was a declaration of intent, proving McLaren had the raw pace to challenge the established order. That moment ignited a ten-month war of attrition, characterized by strategic masterstrokes, controversial team orders, and sharp public exchanges that fueled the rivalry both on and off the track. Each race weekend became a high-stakes chess match between two of the sport’s fiercest competitors.

Overcoming Adversity and Pressure

Norris’s path to glory was far from straightforward. The middle phase of the season saw Verstappen and Red Bull reassert their traditional strength, building a significant points lead. Critics questioned McLaren’s consistency and Norris’s ability to handle championship pressure. However, a stunning series of performances after the summer break, including crucial wins in Singapore and Austin, showcased a new level of maturity from the British driver, steadily eroding Verstappen’s advantage and setting up the winner-takes-all showdown in Abu Dhabi.

The Decisive Duel in the Desert

The championship finale was a microcosm of the entire season: a pure, unadulterated head-to-head fight. Starting from the front row together, Norris and Verstappen traded the lead multiple times, their battle uncompromising yet clean. Ultimately, it was Norris’s relentless pace in the final stint on a different tire strategy that made the difference. As he crossed the finish line, a mere heartbeat ahead of his rival, the McLaren garage erupted, celebrating the culmination of a perfect strategic gamble and a driver performing at the absolute peak of his powers.

A New Era Begins

Lando Norris’s 2025 championship triumph is more than a personal achievement; it signals the dawn of a new competitive era in Formula 1. It is a testament to McLaren’s remarkable engineering resurgence and the unwavering belief of a team and driver who refused to be intimidated by a dynasty. The sporting world now looks to 2026, wondering if this is the start of a Norris reign or merely the beginning of an even fiercer rivalry.

The 1965 Fuji Go-Devil: Japan’s Forgotten Folding Scooter

The 1965 Fuji Go-Devil: Japan’s Forgotten Folding Scooter

Long before the modern era of electric micro-mobility, a pioneering Japanese machine laid the groundwork for the folding scooter concept. Emerging in 1964, the Fuji Go-Devil is a largely overlooked chapter in automotive history, predating more famous successors by decades. This compact two-stroke represents a fascinating and mechanical approach to urban transport that has recently resurfaced to capture the interest of collectors.

A Mechanical Marvel of Compact Design

The Go-Devil’s design was focused on pure utility and space-saving ingenuity. Unlike today’s electric models, it was powered by a 50cc two-stroke gasoline engine, offering a simple and mechanical riding experience. Its most notable feature was a clever folding mechanism that allowed the handlebars and seat to collapse down, transforming the scooter into a relatively portable package. This innovation was aimed at urban dwellers and those needing “last-mile” solutions, a concept far ahead of its time in the mid-1960s.

Precursor to an Iconic Lineage

The Fuji Go-Devil’s significance is cemented by its place in the historical timeline. It debuted nearly two decades before Honda’s iconic 1981 Motocompo, which is often mistakenly cited as the pioneer of the Japanese folding scooter genre. The Go-Devil also establishes a direct lineage to contemporary models like the Honda Motocompacto, proving that the core idea of a ultra-compact, stowable personal vehicle has enduring appeal. Its existence recontextualizes the evolution of these practical machines.

A Rare Find for Collectors

Today, the Fuji Go-Devil is an exceptionally rare find. Examples, such as a 1965 model recently noted in the collector market, are prized for their historical value and unique engineering. For enthusiasts, it represents the raw, mechanical origin of a concept that continues to evolve. This forgotten scooter stands as a testament to early innovation in personal mobility, offering a tangible link to the pragmatic and inventive spirit of 1960s Japanese engineering.

Cadillac P146D Code: A/C Evaporator Temperature Sensor Circuit Low Voltage

Understanding the Cadillac P146D Diagnostic Trouble Code

The OBD2 diagnostic trouble code P146D is a manufacturer-specific code primarily used by General Motors (GM), including Cadillac vehicles. This code is stored in the vehicle’s Powertrain Control Module (PCM) or body control module when a fault is detected in the air conditioning (A/C) system’s evaporator temperature sensor circuit. Specifically, P146D indicates a “A/C Evaporator Temperature Sensor Circuit Low Voltage” condition. This sensor is critical for protecting the A/C system from freezing and ensuring optimal cooling performance and compressor longevity. When this code appears, it typically disables the A/C compressor to prevent potential damage, leading to a lack of cold air from the vents.

Primary Causes of the P146D Code in Cadillac Models

Diagnosing a P146D code requires a systematic approach, starting with the most common and easily accessible components. The root cause is an electrical signal from the evaporator temperature sensor that is lower than the expected operating range, which the vehicle’s computer interprets as a fault.

1. Faulty A/C Evaporator Temperature Sensor

The sensor itself is the most frequent culprit. Located within the HVAC case near the evaporator core, it is exposed to constant temperature cycling and moisture, which can lead to internal failure. A damaged sensor will send an incorrect (usually too low) voltage signal or no signal at all, triggering the P146D code.

2. Damaged Wiring or Poor Electrical Connections

The wiring harness connecting the sensor to the control module can suffer from:

  • Chafing or Shorts: Wires rubbing against sharp edges can expose copper, causing a short to ground which creates a low voltage condition.
  • Corroded Connectors: Moisture from the A/C system can infiltrate electrical connectors, leading to corrosion and poor signal transmission.
  • Open Circuits: A broken wire within the harness will interrupt the signal path entirely.

3. Issues with the HVAC Control Module or PCM

While less common, a malfunction within the module that processes the sensor signal (often the HVAC control module or the PCM) can be the source. Internal faults can prevent it from correctly reading the sensor’s input. This is typically diagnosed only after ruling out sensor and wiring issues.

4. Low Refrigerant Charge (Secondary Cause)

An undercharged A/C system can cause the evaporator to get excessively cold. The evaporator temperature sensor may detect this abnormally low temperature and send a voltage signal that falls outside the normal parameters, potentially setting a P146D. Always check refrigerant pressure as part of a complete diagnosis.

Symptoms of a P146D Fault in Your Cadillac

When the P146D code is active, the vehicle’s computer will often take defensive action to protect the A/C compressor. Drivers will notice one or more of the following symptoms:

  • No Cold Air from Vents: The most immediate and noticeable symptom. The A/C compressor is disabled by the PCM.
  • Illuminated Check Engine Light (CEL) or Service A/C Light: The P146D code will trigger the CEL. Some Cadillac models may also display a specific “Service A/C” message on the driver information center.
  • Inoperative Climate Control Auto Function: The automatic temperature control system may default to manual fan-only mode.
  • Potential Compressor Clutch Not Engaging: You may hear the compressor clutch fail to click on when the A/C is activated.

Step-by-Step Diagnostic and Repair Procedure

A proper diagnosis requires a digital multimeter (DMM), a scan tool capable of reading live data, and access to vehicle service information for wiring diagrams and specifications.

Step 1: Preliminary Checks and Code Verification

Begin by using your OBD2 scanner to confirm the presence of P146D. Clear the code and perform a test drive with the A/C on max cool to see if it returns. This confirms an active fault. Visually inspect the sensor connector and surrounding wiring for obvious damage, corrosion, or disconnection.

Step 2: Live Data Monitoring with a Scan Tool

Connect your scan tool and navigate to the live data stream for the HVAC or PCM parameters. Look for the “A/C Evaporator Temp” or similar PID (Parameter ID). With the vehicle and A/C running, compare the displayed temperature to the ambient air temperature near the evaporator drain tube. A reading that is stuck at an extreme low value (e.g., -40°C/F) or is illogical indicates a sensor or circuit fault.

Step 3: Electrical Testing of the Sensor and Circuit

Disconnect the electrical connector from the evaporator temperature sensor. With the ignition ON (engine off), use your DMM to check for reference voltage (typically 5 volts) and a good ground on the harness side of the connector. Next, test the sensor itself. Measure its resistance across its two terminals while also measuring the temperature of the sensor body. Compare the resistance reading to the temperature-resistance chart found in the vehicle’s service manual. A reading that deviates significantly indicates a bad sensor.

Step 4: Wiring Harness Continuity and Short Testing

If the sensor tests good, the problem lies in the wiring. With the connector still disconnected, perform a continuity test on each wire from the sensor connector back to the control module connector. Also, check each wire for a short to ground. Repair any found opens, shorts, or high-resistance connections.

Step 5: Repair, Replacement, and Final Verification

Repair: If wiring is faulty, repair it using solder and heat shrink tubing.
Replacement: If the sensor is faulty, replace it with a high-quality OEM or equivalent part. The sensor is usually accessible behind the glove box or under the dashboard.
Verification: After repair, clear all codes, start the engine, and activate the A/C. Monitor live data to confirm the evaporator temperature reading is now logical and dynamic. Verify that cold air is being produced and that the code does not return after a test drive.

Conclusion and Professional Recommendation

Code P146D is a specific but manageable fault that directly impacts your Cadillac’s comfort system. While a skilled DIYer with the right tools can diagnose and fix the common causes—a failed sensor or damaged wiring—the location of the components can be challenging. Accessing the evaporator temperature sensor often requires removing interior trim panels. If you are not comfortable with electrical diagnostics or dashboard disassembly, seeking a qualified automotive technician, especially one familiar with GM/Cadillac HVAC systems, is strongly recommended. They will have the technical service bulletins (TSBs), wiring diagrams, and experience to resolve the issue efficiently, restoring your Cadillac’s climate control to its proper, frosty operation.

Understanding and Fixing OBD2 Code P146D on Buick Vehicles

What is OBD2 Code P146D on a Buick?

OBD2 diagnostic trouble code (DTC) P146D is a manufacturer-specific code primarily associated with General Motors (GM) vehicles, including various Buick models. The official definition is “Fuel Tank Pressure Sensor Circuit Low Voltage.” This code is part of the vehicle’s sophisticated Evaporative Emission Control (EVAP) system, which is designed to prevent fuel vapors from escaping into the atmosphere. When the powertrain control module (PCM) detects that the voltage signal from the fuel tank pressure (FTP) sensor is consistently lower than the expected range for a specified period, it logs code P146D and illuminates the check engine light (CEL).

The Role of the Fuel Tank Pressure Sensor

The FTP sensor is a critical component located on or near the fuel tank. Its primary function is to monitor pressure and vacuum levels within the sealed fuel system. This data is essential for the PCM to:

  • Detect leaks in the EVAP system (a key part of emissions compliance).
  • Control the purge valve to allow stored fuel vapors to be drawn into the engine and burned.
  • Monitor the integrity of the fuel tank and its related components during self-tests.

A “circuit low voltage” reading indicates the signal wire is reporting a voltage near zero volts, suggesting a short to ground, an open circuit, or a faulty sensor.

Common Symptoms of Buick P146D Code

Unlike some engine codes that cause drivability issues, P146D is primarily an emissions-related fault. Drivers may notice subtle signs or none at all. However, the following symptoms are commonly associated with this code:

  • Illuminated Check Engine Light (MIL): This is the most universal and often the only symptom.
  • Failed Emissions Test: The vehicle will not pass a state or local emissions inspection with an active EVAP system code.
  • Slight Fuel Odor: In some cases, a small leak in the EVAP system may allow fuel vapors to escape, which might be noticeable near the fuel tank or filler neck.
  • Reduced Fuel Efficiency: While not always pronounced, a malfunctioning EVAP system can sometimes lead to a minor decrease in miles per gallon (MPG).
  • No Observable Symptoms: Often, the car will drive completely normally, with the check engine light being the sole indicator of a problem.

Buick Models Commonly Affected

Code P146D has been documented in various Buick models that share GM’s global vehicle platforms and EVAP system architecture. Common models include:

  • Buick Enclave
  • Buick LaCrosse
  • Buick Regal
  • Buick Encore
  • Buick Verano

Diagnosing the Cause of P146D: A Step-by-Step Guide

Accurate diagnosis is key to an effective repair. A systematic approach using a professional-grade OBD2 scanner and a digital multimeter (DMM) is required. Warning: Always ensure the work area is well-ventilated and follow safety procedures when working around the fuel system.

Step 1: Preliminary Checks and Code Verification

Begin by using your scan tool to confirm the presence of P146D. Clear the code and perform a test drive to see if it returns immediately or only under certain conditions (like a specific fuel level). Check the vehicle’s service bulletins (TSBs) for any known issues related to the FTP sensor on your specific Buick model and year.

Step 2: Visual Inspection of Wiring and Connectors

Carefully inspect the wiring harness connected to the FTP sensor, typically located on top of the fuel tank or along the fuel filler neck. Look for:

  • Chafed, pinched, or burnt wires.
  • Corroded or loose electrical connectors.
  • Physical damage to the sensor itself.

Address any obvious physical damage before proceeding to electrical tests.

Step 3: Electrical Testing of the FTP Sensor Circuit

With the ignition OFF, disconnect the electrical connector from the FTP sensor. Using a wiring diagram for your specific vehicle is highly recommended. Key tests include:

  • Reference Voltage (5V): With the ignition ON, probe the reference voltage wire (often 5V). A reading significantly lower than 5V indicates a problem in the supply circuit from the PCM.
  • Signal Circuit: Check the signal wire for a short to ground. With the connector still disconnected, measure resistance between the signal pin and chassis ground. It should be open (infinite resistance). A low resistance confirms a short.
  • Ground Circuit: Check the ground wire for continuity to a good chassis ground. A high resistance indicates a bad ground connection.

Step 4: Testing the Fuel Tank Pressure Sensor Itself

If the wiring checks out, the sensor itself is likely faulty. You can perform a basic bench test. Using the DMM in resistance or voltage mode, apply a gentle vacuum (with a hand pump) to the sensor’s reference port while monitoring the signal output. The resistance or voltage should change smoothly. A dead, sticky, or erratic sensor needs replacement.

Repair Solutions for Buick P146D Code

Once the root cause is identified, the repair is typically straightforward. The most common fixes are listed below.

Repair 1: Fixing Damaged Wiring or Connectors

If the inspection reveals damaged wiring, repair it by splicing in new wire using solder and heat-shrink tubing—never use twist-on connectors in automotive environments. Clean any corroded connector terminals with electrical contact cleaner.

Repair 2: Replacing the Faulty Fuel Tank Pressure Sensor

This is the most common repair for a confirmed P146D. The FTP sensor is usually held in place by a locking ring or bolts. Important: The fuel tank pressure must be equalized to atmospheric pressure before removal. This often involves loosening the gas cap and waiting. Follow the specific service procedure for your Buick to safely depressurize the system and replace the sensor.

Repair 3: Addressing PCM Issues (Rare)

In very rare instances, a faulty PCM that fails to supply the proper 5-volt reference could be the cause. This should only be considered after all wiring and the sensor itself have been definitively ruled out. Professional reprogramming or replacement may be necessary.

Post-Repair Procedure and Code Clearing

After completing the repair, clear the P146D code with your scan tool. The PCM will need to run a complete EVAP system monitor test to verify the fix. This drive cycle is often specific and may require a mix of highway and city driving over several trips. Use your scanner to check the “monitor status” to confirm all emissions tests, especially the EVAP test, have been completed successfully. Once the monitor runs and passes, the check engine light should remain off, indicating a successful repair.