P1073 – Mass Air Flow Sensor 2 Signal Too Small

P1073 Possible Causes

  • Faulty mass air flow sensor
  • Mass air flow sensor harness is open or shorted
  • Poor electrical connection in mass air flow sensor circuit

How to Fix Code P1073?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Check engine light on (or service engine soon warning light)

P1073 Meaning

The mass air flow sensor 2 signal is too small is the generic description for code P1073, but the manufacturer may have a different description for your specific vehicle model and year. Currently, we don’t have additional information about OBDII code P1073.

P1074 – Mass Air Flow Sensor 2 Signal Too High

P1074 Possible Causes

  • Faulty mass air flow sensor
  • Mass air flow sensor harness is open or shorted
  • Poor electrical connection in mass air flow sensor circuit

How to Fix Code P1074?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Check engine light on (or service engine soon warning light)

P1074 Meaning

The mass air flow sensor 2 signal is too high is the generic description for code P1074, but the manufacturer may have a different description for your specific vehicle model and year. Currently, we don’t have additional information about OBDII code P1074.

P1077 – Low Speed Intake Manifold Runner Control System Malfunction

P1077 Possible Causes

  • Faulty intake manifold runner control valve (IMRC)
  • IMRC valve circuit is open or shorted
  • Poor electrical connection in the IMRC valve circuit

How to Fix Code P1077?

Start by checking the “possible causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Illuminated engine light (or service engine soon warning light)

P1077 Meaning

Engine power is achieved by closing and opening the intake manifold runner control valve (IMRC). When the valve is closed, torque is high at low engine RPM. When the valve is open, there is high torque and high engine RPM.

P1078 – High RPM Intake Manifold Runner Control Malfunction

Code P1078: Complete Guide (Causes, Symptoms and Solutions)

Meaning of Code P1078

Code P1078 is related to a malfunction of the Intake Manifold Runner Control (IMRC) valve. This valve plays a key role in optimizing engine performance:

  • In the closed position: Increases torque at low RPM.
  • In the open position: Allows for high power at high RPM.
    A fault in this valve or its circuit disrupts the balance between torque and power, triggering code P1078.

Possible Symptoms

  • 🚨 Check Engine Light illuminated (or pre-warning of imminent malfunction).
  • ⚠️ Decreased engine performance (hesitant acceleration, loss of power).
  • 🔧 Irregular idle or abnormal engine behavior.

Probable Causes

  1. IMRC valve failure: Mechanical wear or blockage.
  2. Electrical circuit problem:
  • IMRC wiring harness open or shorted.
  • Damaged connectors (bent, corroded, loose pins).
  1. Poor connection at the Engine Control Unit (ECU).

Diagnosis and Repair of Code P1078

Step 1: Visual Inspection

  • Check the IMRC harness: Look for frayed, burnt, or disconnected wires.
  • Inspect the connectors: Ensure they are clean, securely fastened, and free of corrosion.

Step 2: IMRC Valve Test

  • Use a multimeter to measure the valve’s resistance (compare with manufacturer specifications).
  • If the resistance is out of specification, replace the valve.

Step 3: Electrical Circuit Check

  • Test the harness for continuity and absence of short circuits.
  • If a fault is detected, repair or replace the harness.

Step 4: Code Reset

  • Clear the P1078 code with an OBD2 scanner after repairs.
  • Perform a road test to confirm the fault is gone.

Tip: If the problem persists, consult a professional for an in-depth diagnosis (e.g., checking the ECU or intake manifold).

Toyota FJ Cruiser 2008: 1000-Hour Restoration

An Epic Transformation of a 2008 Toyota FJ Cruiser

It’s remarkable to see the Toyota FJ Cruiser reach an age where it qualifies for specialized restoration by classic 4×4 workshops. The year 2008 feels like a distant memory, and this particular vehicle began as a modestly rusted model from New England, initially intended for a simple refurbishment. However, the project quickly evolved into a comprehensive overhaul, demanding immense dedication and skill.

The Restoration Journey

Starting with a thorough assessment, the team identified extensive corrosion and wear typical of harsh northeastern winters. Every component, from the chassis to the body panels, required meticulous attention. The process involved disassembling the entire vehicle, sandblasting the frame to remove rust, and applying protective coatings to prevent future deterioration. Specialized techniques were employed to preserve the FJ Cruiser’s iconic design while enhancing its durability.

Unforeseen Challenges and Solutions

As work progressed, unexpected issues emerged, such as seized mechanical parts and outdated electronics. Sourcing authentic replacement components proved challenging, leading to custom fabrications for certain elements. The interior received a complete revitalization, with original seats reupholstered and modern upgrades integrated discreetly to maintain the classic feel. This phase alone accounted for hundreds of hours, highlighting the complexity of balancing originality with reliability.

The Final Result

After 1000 hours of labor, the Toyota FJ Cruiser was reborn, showcasing a flawless exterior, a robust drivetrain, and a refreshed cabin. It stands as a testament to the passion for preserving automotive history, demonstrating how even a relatively modern vehicle can become a cherished classic. This restoration not only revived a rugged SUV but also set a benchmark for future projects in the enthusiast community.

P1078 BMW – Valvetronic Actuator Motor Overload

P1078 BMW Possible Causes

  • Faulty Valvetronic control motor
  • Valvetronic control motor wiring harness open or shorted
  • Poor electrical connection in Valvetronic control motor circuit

How to Fix BMW P1078 Code?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Check engine light illuminated (or service engine soon warning light)

P1078 BMW Meaning

Valvetronic actuator motor overload is the generic description for P1078 BMW code, but the manufacturer may have a different description for your specific vehicle model and year. Currently, we don’t have additional information about the P1078 BMW OBDII code.

P1078 NISSAN – Exhaust Valve Timing Control Position Sensor 1 Circuit

P1078 NISSAN Possible Causes

  • Faulty exhaust valve timing control position sensor, bank 1
  • Exhaust valve timing control position sensor 1 harness is open or shorted
  • Poor electrical connection in exhaust valve timing control position sensor circuit, bank 1
  • Debris accumulation in camshaft signal pickup portion
  • Crankshaft position sensor

How to Fix P1078 NISSAN Code?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

When is the Code Detected?

Excessively high or low sensor voltage is sent to the Engine Control Module (ECM).

Symptoms

Possible
Engine light on (or service engine soon warning light)

P1078 NISSAN Meaning

The exhaust valve timing control position sensor detects the concave groove at the rear end of the exhaust camshaft.
This sensor signal is used to detect the position of the exhaust camshaft.
This sensor uses a Hall IC.
Based on the exhaust camshaft position, the ECM controls the exhaust valve timing control magnet retarder to optimize the exhaust valve opening/closing timing for driving conditions.

P107A – VVT Overload Protection Control Motor Current Too High

P107A Possible Causes

  • Faulty Variable Valve Timing (VVT) overload protection control motor
  • Variable Valve Timing (VVT) overload protection control motor circuit open or shorted
  • Variable Valve Timing (VVT) overload protection control motor circuit poor electrical connection

How to Fix Code P107A?

Start by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Check Engine Light illuminated (or Service Engine Soon warning light)

P107A Meaning

The Engine Control Module (ECM) monitors the Variable Valve Timing (VVT) overload protection control motor. The ECM sets the OBDII code when the Variable Valve Timing (VVT) overload protection control motor does not meet factory specifications.

P1081 – Exhaust Line 3- Mixture Adaptation Range 1 Lower Lean Limit Not Reached

P1081 Possible Causes

  • Faulty oxygen sensor
  • Oxygen sensor harness is open or short-circuited
  • Poor electrical connection in oxygen sensor circuit

How to Fix Code P1081?

Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Check engine light on (or service engine soon warning light)

P1081 Meaning

Exhaust Line 3 – Fuel Mixture Adaptation Range 1 Lower Lean Limit Not Reached is the generic description for code P1081, but the manufacturer may have a different description for your specific vehicle model and year. Currently, we don’t have additional information about OBDII code P1081.

P1081 LEXUS – Shock Absorber Switching Valve HC, Row 1 Stuck Open

P1081 LEXUS Possible Causes

  • Faulty exhaust gas temperature sensor
  • Exhaust gas temperature sensor harness is open or shorted
  • Poor electrical connection in the exhaust gas temperature sensor circuit
  • Hydro-Carbon Absorber and Catalyst (HCAC) valve stuck or actuator problem

How to Fix P1081 LEXUS Code?

Start by checking the “possible causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Engine light on (or service engine soon warning light)

P1081 LEXUS Meaning

The Engine Control Module (ECM) monitors the exhaust gas temperature sensor. The ECM sets the Diagnostic Trouble Code (DTC) when the exhaust gas temperature sensor does not meet factory specifications. HCAC (Hydro-Carbon Absorber and Catalyst System) fault detected