P1235 MERCURY Possible Causes

• Faulty Fuel Pump Driver Module (FPDM)
• FPDM harness is open or shorted
• Poor electrical connection in FPDM circuit
• Faulty Powertrain Control Module (PCM)

How to Fix Code P1235 MERCURY?

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)

P1235 MERCURY Meaning

Code P1235 indicates that the Fuel Pump Driver Module (FPDM) has detected an invalid or missing fuel pump (FP) circuit signal from the Powertrain Control Module (PCM). The FPDM sends a message to the PCM via the FPM circuit, indicating that this fault has been detected. The PCM sets the DTC when the message is received.

P1235 MITSUBISHI Possible Causes

• Faulty throttle body
• Faulty mass air flow (MAF) sensor
• Mass air flow (MAF) sensor harness is open or shorted
• Poor electrical connection in the mass air flow (MAF) sensor circuit

How to Fix P1235 MITSUBISHI 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)

P1235 MITSUBISHI Meaning

The powertrain control module (PCM) monitors the mass air flow (MAF) sensor. The PCM sets the OBDII code when the mass air flow (MAF) sensor does not meet factory specifications.

P1235 NISSAN Possible Causes

• Faulty electronic throttle control actuator (TP sensors 1 and 2)
• Electronic throttle control actuator harness is open or shorted
• Poor electrical connection in the electronic throttle control actuator circuit

How to Fix P1235 NISSAN 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)

P1235 NISSAN Meaning

The electronic throttle control actuator consists of a throttle control motor, throttle position sensor, etc. The throttle position sensor responds to throttle valve movement.
The throttle position sensor has two sensors. These sensors are a type of potentiometer that convert the throttle valve position into output voltage and send the voltage signal to the engine control module (ECM). Additionally, these sensors detect the opening and closing speed of the throttle valve and transmit voltage signals to the ECM. The ECM determines the current throttle valve opening angle from these signals and the ECM controls the throttle control motor to properly adjust the throttle valve opening angle in response to driving conditions.

P1235 TOYOTA Possible Causes

• Faulty high-pressure fuel pump
• High-pressure fuel pump wiring harness is open or short-circuited
• Poor electrical connection in the high-pressure fuel pump circuit

How to Fix Code P1235 TOYOTA?

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)

P1235 TOYOTA Meaning

The high-pressure fuel pump circuit is the generic description for Toyota code P1235, but the manufacturer may have a different description for your vehicle model and year. Currently, we do not have more information about the Toyota P1235 OBDII code.

P1236 Possible Causes

• Faulty Fuel Pump Driver Module (FPDM)
• FPDM harness is open or shorted
• Poor electrical connection in FPDM circuit
• Faulty Powertrain Control Module (PCM)

How to Fix Code P1236?

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)

P1236 Meaning

Code P1236 indicates that the Fuel Pump Driver Module (FPDM) has detected an invalid or missing Fuel Pump (FP) circuit signal from the Powertrain Control Module (PCM). The FPDM sends a message to the PCM via the FPM circuit, indicating that this fault has been detected. The PCM sets the DTC when the message is received.

P1236 FORD F150 Possible Causes

• Faulty Fuel Pump Driver Module (FPDM)
• FPDM harness is open or shorted
• Poor electrical connection in the FPDM circuit
• Faulty Powertrain Control Module (PCM)

How to Fix P1236 FORD F150 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

Note: For LS6/LS8 and Thunderbird, FPDM functions are integrated into the Rear Electronic Module (REM). Additionally, the REM does not use an FPM circuit. Diagnostic information is sent over the communication link.
P1236 indicates that the FPDM detected an invalid or missing FP circuit signal from the PCM. The FPDM will send a message to the PCM via the FPM circuit, indicating that this fault has been detected. The PCM will set the DTC when the message is received.

Possible Symptoms

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

P1236 FORD F150 Meaning

The P1236 code indicates that the Fuel Pump Driver Module (FPDM) detected an invalid or missing Fuel Pump (FP) circuit signal from the Powertrain Control Module (PCM). The FPDM sends a message to the PCM via the FPM circuit, indicating that this fault has been detected. The PCM sets the DTC when the message is received.

P1236 BMW Possible Causes

• Faulty fuel pump relay
• Fuel pump relay harness is open or shorted
• Poor electrical connection in the fuel pump relay circuit

How to Fix BMW P1236 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

Fuel pump relay primary circuit high

Possible Symptoms

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

P1236 BMW Meaning

Fuel Pump Relay Activation is the generic description for the BMW P1236 code, but the manufacturer may have a different description for your vehicle’s model and year. Currently, we do not have more information about the BMW P1236 OBDII code.

P1236 FORD Possible Causes

• Faulty Fuel Pump Driver Module (FPDM)
• FPDM harness is open or shorted
• Poor electrical connection in FPDM circuit
• Faulty Powertrain Control Module (PCM)

How to Fix P1236 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

Note: For LS6/LS8 and Thunderbird, FPDM functions are integrated into the Rear Electronic Module (REM). Additionally, the REM does not use an FPM circuit. Diagnostic information is sent via the communication link.

Possible Symptoms

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

P1236 FORD Meaning

The P1236 code indicates that the Fuel Pump Driver Module (FPDM) has detected an invalid or missing fuel pump (FP) circuit signal from the Powertrain Control Module (PCM). The FPDM sends a message to the PCM via the FPM circuit, indicating that this fault has been detected. The PCM sets the DTC when the message is received.

P1236 GMC Possible Causes

• Faulty fuel injector 5
• Fuel injector 5 harness is open or shorted
• Poor electrical connection in fuel injector 5 circuit
• Faulty Engine Control Module (ECM)

How to Fix GMC Code P1236?

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)

P1236 GMC Meaning

The Engine Control Module (ECM) provides voltage to each fuel injector on the positive voltage injector control circuits. The ECM powers each fuel injector by grounding that fuel injector’s control circuit. The ECM monitors the status of the positive voltage injector control circuits and the fuel injector control circuits. When a fuel injector circuit condition is detected by the ECM, the affected fuel injectors will be disabled and may disable the related fuel injector group. The Diagnostic Trouble Code (DTC) will be set when the ECM injector output driver detects incorrect current on a fuel injector circuit.

P1236 INFINITI Possible Causes

• Faulty Electronic Throttle Control (ETC) actuator (throttle control motor)
• Electronic Throttle Control (ETC) actuator harness is open or shorted
• Poor electrical connection in the Electronic Throttle Control (ETC) actuator circuit

How to Fix Code P1236 INFINITI?

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

When is the Code Detected?

The Engine Control Module (ECM) detects short circuits in both circuits between the ECM and the throttle control motor.

Possible Symptoms

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

P1236 INFINITI Meaning

The throttle control motor is operated by the Engine Control Module (ECM) and it opens and closes the throttle valve. The current throttle valve opening angle is detected by the throttle position sensor and it provides feedback to the ECM to control the throttle control motor to make the throttle valve opening angle correctly in response to the driving condition.