P1285 GMC Code – Accelerator Pedal Position Sensor 3 Circuit

P1285 Code GMC Possible Causes

Faulty Accelerator Pedal Position (APP)
Accelerator Pedal Position Harness is Open or Shorted
Poor Electrical Connection in the Accelerator Pedal Position Circuit

| How is GMC Code P1285 Repaired?

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

| What are the Possible Symptoms of GMC Code P1285?

Engine Light On (or Service Engine Soon Warning Light)

| What is the Meaning of GMC Code P1285?

The Accelerator Pedal Position (APP) sensors are located in the Throttle Actuator Control (TAC) module assembly. The TAC module assembly is mounted on the accelerator pedal bracket. There are 3 individual APP sensors in the TAC module. Three separate signal circuits, low reference circuits, and 5-volt reference circuits are used to determine the accelerator pedal position. The APP sensor signal voltages increase when the accelerator pedal is pressed.

P1285 HONDA Code – Accelerator Pedal Position Sensor 3 Circuit

P1285 HONDA code possible causes

Faulty accelerator pedal position (APP) sensor
Accelerator pedal position harness is open or shorted
Poor electrical connection in accelerator pedal position circuit

| How is P1285 HONDA code repair performed?

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.

| What are the possible symptoms of P1285 HONDA code?

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

| What does P1285 HONDA code mean?

The accelerator pedal position (APP) sensors are located in the throttle actuator control (TAC) module assembly. The TAC module assembly is mounted on the accelerator pedal bracket. There are 3 individual APP sensors in the TAC module. Three separate signal circuits, low reference circuits, and 5-volt reference circuits are used to determine the accelerator pedal position. The APP sensor signal voltages increase when the accelerator pedal is depressed.

P1285 ISUZU Code – Accelerator Pedal Position Sensor 3 Circuit

P1285 ISUZU code possible causes

Faulty accelerator pedal position (APP)
Accelerator pedal position harness is open or shorted
Poor electrical connection in the accelerator pedal position circuit

| How is the P1285 ISUZU code repair performed?

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

| What are the possible symptoms of P1285 ISUZU code?

Engine light on (or service engine soon warning light)

| What is the meaning of P1285 ISUZU code?

Code P1285 LINCOLN – Cylinder Head Overheating Condition

P1285 Code LINCOLN Possible Causes

Engine overheated
Low engine coolant level
Faulty Cylinder Head Temperature (CHT) sensor
Cylinder Head Temperature sensor harness is open or shorted
Poor electrical connection in the Cylinder Head Temperature sensor circuit

| How is the P1285 LINCOLN Code Repair Done?

| What are the Possible Symptoms of P1285 LINCOLN Code?

Check Engine Light On (or Service Engine Soon Warning Light)

| What is the Meaning of P1285 LINCOLN Code?

The Cylinder Head Temperature (CHT) sensor is a thermistor device where resistance changes with temperature. The electrical resistance of a thermistor decreases as temperature increases and resistance increases as temperature decreases. The variable resistance affects the voltage drop across the sensor terminals and provides electrical signals to the Powertrain Control Module (PCM) corresponding to the temperature.
The CHT sensor is installed in the aluminum cylinder head and measures the metal temperature. The CHT sensor can provide comprehensive engine temperature information and can be used to infer coolant temperature. If the CHT sensor transmits an overheating condition to the PCM, the PCM initiates a fail-safe cooling strategy based on the CHT sensor information. A cooling system issue such as low coolant level or coolant loss can cause overheating. This could damage major engine components. By using both the CHT sensor and the fail-safe cooling strategy, the PCM prevents damage by allowing engine air cooling and backup capability.
The Diagnostic Trouble Code (DTC) indicates detected cylinder head overheating, meaning an engine overheating condition has been detected by the cylinder head temperature sensor.

P1285 MAZDA Code – Cylinder Head Overheating Condition

P1285 MAZDA code possible causes

Engine overheated
Low engine coolant level
Faulty Cylinder Head Temperature (CHT) sensor
Cylinder Head Temperature sensor harness is open or shorted
Poor electrical connection in the Cylinder Head Temperature sensor circuit

| How is the P1285 MAZDA code repair performed?

| What are the possible symptoms of P1285 MAZDA code?

Check Engine Light On (or Service Engine Soon Warning Light)

| What does P1285 MAZDA code mean?

The Cylinder Head Temperature (CHT) sensor is a thermistor device where resistance changes with temperature. The electrical resistance of a thermistor decreases as temperature increases and resistance increases as temperature decreases. The variable resistance affects the voltage drop across the sensor terminals and provides electrical signals to the Powertrain Control Module (PCM) corresponding to the temperature.
The CHT sensor is installed in the aluminum cylinder head and measures the metal temperature. The CHT sensor can provide comprehensive engine temperature information and can be used to infer coolant temperature. If the CHT sensor transmits an overheating condition to the PCM, the PCM initiates a fail-safe cooling strategy based on CHT sensor information. A cooling system issue such as low coolant level or coolant loss can cause overheating. This could damage major engine components. Using both the CHT sensor and the fail-safe cooling strategy, the PCM prevents damage by enabling engine air cooling and backup capability.
The Diagnostic Trouble Code (DTC) indicates detected cylinder head overheating, meaning an engine overheating condition has been detected by the cylinder head temperature sensor.

P1285 MERCURY Code – Cylinder Head Overheating Condition

P1285 Code MERCURY Possible Causes

Engine overheated
Low engine coolant level
Faulty Cylinder Head Temperature (CHT) sensor
Cylinder Head Temperature sensor harness is open or shorted
Poor electrical connection in the Cylinder Head Temperature sensor circuit

| How is the MERCURY P1285 Code Repair Performed?

| What are the Possible Symptoms of MERCURY P1285 Code?

Engine Light On (or Service Engine Soon Warning Light)

| What is the Meaning of MERCURY P1285 Code?

The Cylinder Head Temperature (CHT) sensor is a thermistor device where the resistance changes with temperature. The electrical resistance of a thermistor decreases as the temperature increases and the resistance increases as the temperature decreases. The variable resistance affects the voltage drop across the sensor terminals and provides electrical signals to the Powertrain Control Module (PCM) corresponding to the temperature.
The CHT sensor is installed in the aluminum cylinder head and measures the metal temperature. The CHT sensor can provide comprehensive engine temperature information and can be used to infer coolant temperature. If the CHT sensor reports an overheating condition to the PCM, the PCM initiates a fail-safe cooling strategy based on the CHT sensor information. A cooling system issue such as low coolant level or coolant loss can cause overheating. This could damage major engine components. By using both the CHT sensor and the fail-safe cooling strategy, the PCM prevents damage by allowing engine air cooling and backup capability.
The Diagnostic Trouble Code (DTC) indicates detected cylinder head overheating, meaning an engine overheating condition has been detected by the Cylinder Head Temperature sensor.

P1285 VOLKSWAGEN Code – Fuel Injection Air Control Valve Circuit Short to Ground

How is the P1285 VOLKSWAGEN code repair performed?

| What are the possible symptoms of the P1285 VOLKSWAGEN code?

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

| What is the meaning of the P1285 VOLKSWAGEN code?

The fuel injection air control valve circuit shorted to ground is the generic description for Volkswagen P1285 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we do not have more information about the Volkswagen P1285 OBDII code.

Code P1286 – Air-Fuel Ratio Sensor 1 Circuit High Voltage Detected Bank 2

P1286 code possible causes

Faulty Air/Fuel Ratio (A/F) Sensor 1 Heater Bank 2
Air-Fuel Ratio (A/F) circuit wiring open or shorted
Poor electrical connection in Air-Fuel Ratio (A/F) circuit

| How is P1286 code repair performed?

| What are the possible symptoms of P1286 code?

Check Engine Light On (or Service Engine Soon Warning Light)

| What does P1286 code mean?

The A/F sensor is a planar dual-cell limit current sensor. The sensing element of the A/F sensor is the combination of a Nernst concentration cell (sensor cell) with an oxygen pump cell, which transports ions. It has a heating element in the element.
The sensor is capable of accurately measuring λ=1, but also in the lean and rich ranges. With its control electronics, the sensor outputs a clear, continuous signal over a wide λ range (0.7 < λ < air).
The exhaust gas components diffuse through the diffusion gap at the oxygen pump electrode and Nernst concentration cell, where they are brought to thermodynamic equilibrium.
An electronic circuit controls the pump current through the oxygen pump cell so that the exhaust gas composition in the diffusion gap remains constant at =1. Therefore, the A/F sensor is able to indicate the air/fuel ratio by this pumping current. Additionally, a heating element is built into the sensor to ensure the required operating temperature of 700 to 800 C (1,292 to 1,472 F).

P1286 NISSAN MAXIMA Code – Air-Fuel Ratio Sensor 1 High Voltage Circuit Detected Bank 2

P1286 NISSAN MAXIMA code possible causes

Faulty Air/Fuel Ratio (A/F) Sensor 1 Bank 2
Air/Fuel Ratio (A/F) Sensor 1 Bank 2 harness is open or shorted
Air/Fuel Ratio (A/F) Sensor 1 Bank 2 circuit poor electrical connection

| How is the P1286 NISSAN MAXIMA code repaired?

| When is the P1286 NISSAN MAXIMA code detected?

The A/F signal calculated by the ECM from the A/F Sensor 1 signal is constantly approx. 0V.

| What are the possible symptoms of P1286 NISSAN MAXIMA code?

Check Engine Light On (or Service Engine Soon Warning Light)
Possible rough engine idle

| What does P1286 NISSAN MAXIMA code mean?

The A/F sensor is a planar dual-cell limit current sensor. The sensing element of the A/F sensor combines a Nernst concentration cell (sensor cell) with an oxygen pump cell, which transports ions. It contains a heating element within the sensor.
The sensor can accurately measure λ=1, as well as in both lean and rich ranges. With its control electronics, the sensor provides a clear, continuous signal across a wide λ range (0.7 < λ < air).
Exhaust gas components diffuse through the diffusion gap at the oxygen pump electrode and the Nernst concentration cell, where they reach thermodynamic equilibrium.
An electronic circuit controls the pump current through the oxygen pump cell so that the exhaust gas composition in the diffusion gap remains constant at λ=1. Therefore, the A/F sensor can indicate the air/fuel ratio through this pump current. Additionally, a heating element is integrated into the sensor to maintain the required operating temperature of 700 to 800°C (1,292 to 1,472°F).

P1286 ACURA Code – Low Engine Oil Pressure Sensor Stuck

P1286 ACURA code possible causes

Low engine oil level
Faulty engine oil pressure (EOP) sensor
Engine oil pressure sensor harness is open or shorted
Poor electrical connection in the engine oil pressure sensor circuit

| How is the P1286 ACURA code repair performed?

| What are the possible symptoms of the P1286 ACURA code?

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

| What is the meaning of the P1286 ACURA code?

Two rocker arm oil control solenoids open and close based on commands from the Powertrain Control Module (PCM), and oil pressure is applied then removed from the Valve Pause System (VPS) to alter valve timing and valve operation.
The PCM monitors the switching mechanism’s oil pressure using an engine oil pressure (EOP) sensor and a rocker arm oil pressure switch downstream of the rocker arm oil control solenoid. The PCM compares the oil pressure based on the PCM command and the oil pressure status from the EOP sensor and rocker arm oil pressure switch to determine if the system is operating normally.