P1151 AUDI – Bank 1 Long Term Fuel Trim Range 1 Lower Lean Limit Exceeded

P1151 AUDI Possible Causes

  • Low fuel pressure or volume
  • Check engine for vacuum leaks
  • Clogged or faulty fuel injector(s)
  • Mass Air Flow (MAF) sensor failure

How to Fix P1151 AUDI Code?

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

Possible Symptoms

  • Engine light on (or engine warning light soon to be on)

P1151 AUDI Meaning

Bank 1 Long Term Fuel Trim Range 1 Lower Lean Limit Exceeded is the generic description for Audi P1151 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we do not have more information about the Audi P1151 OBDII code.

P1151 BMW – Intermittent O2 Sensor Heater Circuit Signal, Bank 2 Sensor 1

P1151 BMW Possible Causes

  • Faulty O2 sensor heater, bank 2 sensor 1
  • O2 sensor heater, bank 2 Sensor 1 harness is open or shorted
  • O2 sensor heater circuit, bank 2, sensor 1 circuit poor electrical connection
 

How to Fix BMW P1151 Code?

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

 
 

Possible Symptoms

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

P1151 BMW Meaning

Intermittent signal from O2 sensor heater circuit, sensor 1 of bank 2 is the generic description for Bmw P1151 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we do not have more information about the P1151 Bmw OBDII code.

P1151 CHRYSLER – Fuel Rail Pressure Malfunction Maximum Positive Deviation

P1151 CHRYSLER Possible Causes

  • Fuel system failure condition
  • Faulty fuel pressure solenoid
  • Air in the fuel system

How to Fix P1151 CHRYSLER Code?

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

Possible Symptoms

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

P1151 CHRYSLER Meaning

The Engine Control Module (ECM) has determined that the fuel rail pressure is too high for a specific condition.

P1151 DODGE – Fuel Rail Pressure Malfunction Maximum Positive Deviation

P1151 DODGE Possible Causes

  • Fuel system malfunction condition
  • Faulty fuel pressure solenoid
  • Air in the fuel system
 

How to Fix P1151 DODGE Code?

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

 
 

Possible Symptoms

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

P1151 DODGE Meaning

The Engine Control Module (ECM) has determined that the fuel rail pressure is too high for a specific condition.

Desert Driver’s Reverse Gear Marathon

When Gears Fail, Determination Prevails

Off-road racing demands more than speed—it requires ingenuity and sheer will. Competitors in these grueling events often face mechanical nightmares far from pit crews, relying on quick thinking to stay in the race. Jonathan Dawes recently delivered a stunning example of this never-say-die attitude at the Laughlin Desert Classic, proving that forward isn’t the only way to finish.

The Unthinkable 12-Kilometer Solution

When Dawes’ transmission failed, leaving him stuck with only reverse gear operational, many drivers would have accepted defeat. Instead, he embarked on an extraordinary 12-kilometer journey in reverse across treacherous desert terrain. Navigating bumps, dunes, and competitive traffic backward required intense concentration and exceptional vehicle control, turning a potential disaster into one of the most memorable moments in off-road racing history.

Mastering Reverse Against All Odds

Driving backward at race speeds presents unique challenges—limited visibility, altered vehicle dynamics, and increased physical strain. Dawes adapted his technique on the fly, using mirrors as his primary guide while maintaining enough momentum to conquer obstacles. This impromptu reverse driving masterclass demonstrated how skilled off-road pilots can overcome seemingly insurmountable problems through adaptability and courage.

A Lesson in Off-Road Perseverance

This remarkable feat underscores the core values of desert racing: resilience and innovation. Dawes’ determination to complete the stage, despite the mechanical setback and unconventional method, earned him respect throughout the racing community. His story serves as inspiration for motorsports enthusiasts everywhere, reminding us that sometimes the most direct route to success involves moving in unexpected directions.

P1151 FORD – Lack of Heated Oxygen Sensor Switch Sensor Upstream Indicates Lean Bank 2

P1151 FORD Possible Causes

  • Faulty upstream oxygen sensor, bank 2
  • High or low fuel pressure
  • Dirty/faulty MAF sensor
  • Engine vacuum leak
  • Leaking fuel injector or fuel pressure regulator
  • Faulty Powertrain Control Module (PCM)

How to Fix P1151 FORD Code?

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

Technical Notes

The code means the Powertrain Control Module (PCM) has detected a lean system, meaning there is not enough fuel or an excessive amount of air in the system. Start by checking for vacuum leaks.

When is the Code Detected?

When an HO2S sensor indicates lean at the end of a test, the system tries to correct an over-lean condition. The code is set when the fuel control system no longer detects switching for a calibrated duration.

Possible Symptoms

  • Engine light on (or engine warning light soon to be on)

P1151 FORD Meaning

The Heated Oxygen Sensor (HO2S) monitor is an onboard strategy designed to monitor HO2S sensors for any malfunction or deterioration that could affect emissions. Under specific conditions, the fuel control or upstream HO2S sensors are checked for proper output voltage and response rate (the time it takes to switch from lean to rich or rich to lean). The downstream HO2S sensors used for Catalyst Monitor are also monitored for proper output voltage. An input is required from the engine coolant temperature (ECT) or cylinder head temperature (CHT), intake air temperature (IAT), mass air flow (MAF), throttle position (TP), and crankshaft position (CKP) to activate the HO2S monitor. The fuel system monitor and misfire detection monitor must also have completed successfully before the HO2S monitor is activated.
• The HO2S sensor detects the oxygen content in the exhaust stream and delivers a voltage between zero and 1.0 volt. At stoichiometric lean (air/fuel ratio of about 14.7:1 for gasoline engines), the HO2S will generate a voltage between zero and 0.45 volt. At stoichiometric rich, the HO2S will generate a voltage between 0.45 and 1.0 volt.
• The HO2S monitor evaluates both the upstream (fuel control) and downstream (catalyst monitor) HO2S for proper operation.
• Once the HO2S monitor is activated, the amplitude of the upstream HO2S signal voltage and the response frequency are checked. Excessive voltage is determined by comparing the HO2S signal voltage to a maximum threshold voltage that can be calibrated.
• A fixed frequency closed-loop fuel control routine is executed and the amplitude of the upstream HO2S voltage and the output response frequency are observed. A sample of the upstream HO2S signal is evaluated to determine if the sensor is capable of switching or has a slow response rate.
• An HO2S heater circuit fault is determined by turning the heater on and off and looking for a corresponding change in the OSM and
measuring the current flowing through the heater circuit.
• The MIL is activated after a fault is detected on two consecutive OBD II drive cycles.

P1151 HYUNDAI – Malfunction of Main 2 Accelerator Position Sensor in Electronic Throttle System

P1151 HYUNDAI Possible Causes

  • Faulty Accelerator Pedal Position (APP) Sensor
  • Accelerator Pedal Position (APP) Sensor harness is open or shorted
  • Poor electrical connection in Accelerator Pedal Position (APP) Sensor circuit
 

How to Fix Code P1151 HYUNDAI?

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

 
 

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)
 

P1151 HYUNDAI Meaning

Electronic Throttle Control System Main Accelerator Position Sensor 2 Malfunction is the generic description for Hyundai code P1151, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no further information about Hyundai OBDII code P1151.

P1151 JEEP – Fuel Rail Pressure Malfunction Maximum Positive Deviation

P1151 JEEP Possible Causes

  • Fuel system malfunction condition
  • Faulty fuel pressure solenoid
  • Air in the fuel system
 

How to Fix JEEP Code P1151?

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

 
 

Possible Symptoms

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

P1151 JEEP Meaning

The Engine Control Module (ECM) has determined that the fuel rail pressure is too high for a specific condition.

P1151 LINCOLN – Lack of Heated Oxygen Sensor Switch Sensor Upstream Indicates Lean Bank 2

P1151 LINCOLN Possible Causes

  • Faulty upstream oxygen sensor, bank 2
  • High or low fuel pressure
  • Dirty/faulty MAF sensor
  • Engine vacuum leak
  • Leaking fuel injector or fuel pressure regulator
  • Faulty Powertrain Control Module (PCM)

How to Fix Code P1151 LINCOLN?

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

Technical Notes

The code means the Powertrain Control Module (PCM) has detected a lean system, meaning there is not enough fuel or an excessive amount of air in the system. Start by checking for vacuum leaks.

When is the Code Detected?

When an HO2S sensor indicates lean at the end of a test, the system tries to correct an over-lean condition. The code is set when the fuel control system no longer detects switching for a calibrated duration.

Possible Symptoms

  • Engine light on (or engine warning light soon to be on)

P1151 LINCOLN Meaning

The Heated Oxygen Sensor (HO2S) monitor is an onboard strategy designed to monitor HO2S sensors for any malfunction or deterioration that could affect emissions. Under specific conditions, the upstream fuel control or HO2S sensors are checked for proper output voltage and response rate (the time it takes to switch from lean to rich or rich to lean). The downstream HO2S sensors used for Catalyst Monitor are also monitored for proper output voltage. An input is required from the engine coolant temperature (ECT) or cylinder head temperature (CHT), intake air temperature (IAT), mass air flow (MAF), throttle position (TP), and crankshaft position (CKP) to activate the HO2S monitor. The fuel system monitor and the misfire detection monitor must also have completed successfully before the HO2S monitor is activated.
• The HO2S sensor detects the oxygen content in the exhaust stream and delivers a voltage between zero and 1.0 volt. At stoichiometric lean (air/fuel ratio of about 14.7:1 for gasoline engines), the HO2S will generate a voltage between zero and 0.45 volt. At stoichiometric rich, the HO2S will generate a voltage between 0.45 and 1.0 volt.
• The HO2S monitor evaluates both the upstream (fuel control) and downstream (catalyst monitor) HO2S for proper operation.
• Once the HO2S monitor is activated, the amplitude of the upstream HO2S signal voltage and the response frequency are checked. Excessive voltage is determined by comparing the HO2S signal voltage to a maximum threshold voltage that can be calibrated.
• A fixed-frequency closed-loop fuel control routine is executed, and the amplitude of the upstream HO2S voltage and the output response frequency are observed. A sample of the upstream HO2S signal is evaluated to determine if the sensor is capable of switching or has a slow response rate.
• An HO2S heater circuit fault is determined by turning the heater on and off and looking for a corresponding change in the OSM and
measuring the current flowing through the heater circuit.
• The MIL is activated after a fault is detected on two consecutive OBD II drive cycles.

P1151 MAZDA – Lean Condition HO2S-21 Correcting for Richer Condition

P1151 MAZDA Possible Causes

  • Leaking injector, regulator or excessive fuel pressure
  • Engine vacuum leak or EGR valve open at idle
  • Engine mechanical condition
  • Faulty HO2S sensor or mass air flow (MAF) sensor

How to fix P1151 MAZDA code?

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

Possible Symptoms

  • Engine light on (or engine warning light soon to be on)

P1151 MAZDA Meaning

HO2S-21 lean condition correcting for a richer condition is the generic description of Mazda P1151 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we don’t have more information about Mazda P1151 OBDII code.