P1232 GMC – Injector 4 Output Circuit

P1232 GMC Possible Causes

  • Faulty fuel injector 4
  • Fuel injector 4 harness is open or shorted
  • Poor electrical connection in fuel injector 4 circuit
  • Faulty Fuel Injection Control Module (FICM)
  • Faulty Engine Control Module (ECM)

How is GMC Code P1232 Repaired?

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

If only one fuel injector control circuit Diagnostic Trouble Code (DTC) is set, an open circuit or poor connection is the most likely cause. If groups of 4 fuel injector control circuit DTCs are set, suspect a short to ground. Cylinder groups are 2, 3, 5, 8 or 1, 4, 6, 7. More than 4 fuel injector control circuit DTCs indicate a short to voltage on the fuel injector control circuit is the most likely cause.

Possible Symptoms

  • Engine Light On (or Service Engine Soon Warning Light)
  • Engine Misfire
  • Rough Running

P1232 GMC Meaning

The Engine Control Module (ECM) activates the appropriate fuel injector on the compression stroke for each cylinder. The ECM controls the Fuel Injection Control Module (FICM) by grounding the control circuit through a semiconductor device called a driver. The ECM monitors the driver’s status. If the ECM detects an incorrect voltage for the commanded state of a fuel injector driver, Diagnostic Trouble Code (DTC) P1223, P1226, P1229, P1232, P1235, P1238, P1241, or P1244 will be set.

P1232 LAND-ROVER – Low Speed Fuel Pump Primary Circuit Failure

P1232 LAND-ROVER Possible Causes

  • Faulty low-speed fuel pump
  • Faulty fuel pump relay
  • Low-speed fuel pump harness is open or shorted
  • Poor electrical connection in the low-speed fuel pump circuit
  • Damaged Powertrain Control Module (PCM)

How to Fix Code P1232 LAND-ROVER?

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 Powertrain Control Module (PCM) monitors the output of the low-speed fuel pump (LFP) primary circuit from the PCM. The test fails if: when the LFP circuit is activated (grounded), excessive current draw is detected on the LFP circuit; or when the LFP circuit is deactivated, voltage is not detected on the LFP circuit (the PCM expects to detect VPWR voltage passing through the low-speed fuel pump relay coil to the LFP circuit).

Possible Symptoms

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

P1232 LAND-ROVER Meaning

Low-speed fuel pump primary circuit failure is the generic description for Land-rover code P1232, but the manufacturer may have a different description for your vehicle model and year. Currently, we do not have further information on the Land-rover P1232 OBDII code.

P1232 LINCOLN – Low Speed Fuel Pump Primary Circuit Malfunction

P1232 LINCOLN Possible Causes

  • Faulty low-speed fuel pump
  • Faulty fuel pump relay
  • Low-speed fuel pump harness is open or shorted
  • Poor electrical connection in the low-speed fuel pump circuit
  • Damaged Powertrain Control Module (PCM)
 

How to Fix Code P1232 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 Powertrain Control Module (PCM) monitors the output of the low-speed fuel pump (LFP) primary circuit from the PCM. The test fails if: when the LFP circuit is activated (grounded), excessive current draw is detected on the LFP circuit; or when the LFP circuit is deactivated, voltage is not detected on the LFP circuit (the PCM expects to detect VPWR voltage passing through the low-speed fuel pump relay coil to the LFP circuit).
 
 

Possible Symptoms

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

P1232 LINCOLN Meaning

Low Speed Fuel Pump Primary Circuit Failure is the generic description for Lincoln P1232 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we do not have further information on the Lincoln P1232 OBDII code.

P1232 MERCURY – Primary Circuit Failure of the Low-Speed Fuel Pump

P1232 MERCURY Possible Causes

  • Faulty low-speed fuel pump
  • Faulty fuel pump relay
  • Low-speed fuel pump harness is open or shorted
  • Poor electrical connection in the low-speed fuel pump circuit
  • Damaged Powertrain Control Module (PCM)

How to Fix Code P1232 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.

Technical Notes

The Powertrain Control Module (PCM) monitors the output of the low-speed fuel pump (LFP) primary circuit from the PCM. The test fails if: when the LFP circuit is activated (grounded), excessive current consumption is detected in the LFP circuit; or when the LFP circuit is deactivated, voltage is not detected in the LFP circuit (the PCM expects to detect VPWR voltage passing through the low-speed fuel pump relay coil to the LFP circuit).

Possible Symptoms

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

P1232 MERCURY Meaning

Low-speed fuel pump primary circuit failure is the generic description for Mercury code P1232, but the manufacturer may have a different description for your vehicle’s model and year. Currently, we do not have additional information about Mercury P1232 OBDII code.

P1232 MITSUBISHI – Accelerator Actuator Control Circuit Malfunction

P1232 MITSUBISHI Possible Causes

  • Faulty throttle actuator control motor relay
  • Throttle actuator control motor relay harness is open or shorted
  • Poor electrical connection in throttle actuator control motor relay circuit

How to Fix Code P1232 MITSUBISHI?

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.

Possible Symptoms

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

P1232 MITSUBISHI Meaning

Throttle actuator control circuit malfunction is the generic description for Mitsubishi code P1232, but the manufacturer may have a different description for your specific model and vehicle year. Currently, we don’t have more information about the Mitsubishi P1232 OBDII code.

P1232 VOLKSWAGEN – Cylinder 8 injector circuit short to ground

P1232 VOLKSWAGEN Possible Causes

  • Faulty fuel injector 8
  • Fuel injector 8 harness is open or shorted
  • Poor electrical connection in fuel injector 8 circuit

How to Fix P1232 VOLKSWAGEN 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)

P1232 VOLKSWAGEN Meaning

Cylinder 8 injector circuit short to ground is the generic description for Volkswagen P1232 code, but the manufacturer may have a different description for your vehicle model and year. Currently, we have no further information about Volkswagen P1232 OBDII code.

P1233 – Fuel Pump Driver Module Disabled or Offline

P1233 Possible Causes

  • Inertia fuel shutoff (IFS) switch needs to be reset
  • Faulty fuel pump driver module (FPDM)
  • Fuel pump driver module (FPDM) harness is open or shorted
  • Poor electrical connection in the fuel pump driver module (FPDM) circuit
  • Faulty inertia fuel shutoff (IFS) switch
  • Faulty powertrain control module (PCM)

How to Fix Code P1233?

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)

P1233 Meaning

The powertrain control module (PCM) monitors the fuel pump monitor (FPM) circuit from the fuel pump driver module (FPDM). When the key is turned on, the FPDM continuously sends a duty cycle signal to the PCM via the FPM circuit. The test fails if the PCM stops receiving the duty cycle signal.

P1233 FORD F150 – Fuel Pump Driver Module Disabled or Offline

P1233 1997 FORD F150 Possible Causes

  • Inertia Fuel Shutoff (IFS) switch needs to be reset
  • Faulty Fuel Pump Driver Module (FPDM)
  • Fuel Pump Driver Module (FPDM) harness is open or shorted
  • Poor electrical connection in the Fuel Pump Driver Module (FPDM) circuit
  • Faulty Inertia Fuel Shutoff (IFS) switch
  • Faulty Powertrain Control Module (PCM)

How to Fix Code P1233 1997 FORD F150?

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

For some FORD models:

1. Disconnect the inertia switch harness connector
2. Turn the key to the ON position (engine OFF)
3. Measure the circuit voltage between the inertia switch harness connector and ground
4. If battery voltage is detected, replace the inertia switch
5. Clear the codes.

Possible Symptoms

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

P1233 1997 FORD F150 Meaning

The Powertrain Control Module (PCM) monitors the Fuel Pump Monitor (FPM) circuit from the Fuel Pump Driver Module (FPDM). When the key is turned on, the FPDM continuously sends a duty cycle signal to the PCM via the FPM circuit. The test fails if the PCM stops receiving the duty cycle signal.

P1233 BUICK – Fuel Injector Control Circuit 4 Shorted

P1233 BUICK Possible Causes

  • Faulty fuel injector 4
  • Fuel injector 4 harness is open or shorted
  • Poor electrical connection in fuel injector 4 circuit
  • Faulty Engine Control Module (ECM)

How to Fix Code P1233 BUICK?

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)

P1233 BUICK 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.

P1233 CHEVROLET – Fuel Injector 4 Control Circuit Shorted

P1233 CHEVROLET Possible Causes

  • Faulty fuel injector 4
  • Fuel injector 4 harness is open or shorted
  • Poor electrical connection in fuel injector 4 circuit
  • Faulty Engine Control Module (ECM)

How to Fix Code P1233 CHEVROLET?

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)

P1233 CHEVROLET Meaning

The Engine Control Module (ECM) provides voltage to each fuel injector on the injector positive voltage control circuits. The ECM powers each fuel injector by grounding the control circuit for that fuel injector. The ECM monitors the status of the injector positive voltage 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.