Jeep DTC P1691 – Fuel Injection Pump Controller Calibration Failure
DTC P1691 meaning on Jeep
DTC P1691 on a Jeep indicates a Fuel Injection Pump Controller Calibration Failure. This fault code is specific to the fuel injection system’s controller calibration not being within the expected range.
Jeep DTC P1691 symptoms
Symptoms of DTC P1691 on a Jeep may include:
- Check Engine Light (MIL) illuminated
- Engine running rough or misfiring
- Reduced engine performance
- Difficulty starting the vehicle
Jeep DTC P1691 causes
The potential causes of DTC P1691 on a Jeep include:
- Incorrect fuel injection pump controller calibration
- Issues with the fuel injection pump itself
- Wiring or connection problems related to the fuel injection system
Jeep DTC P1691 seriousness
DTC P1691 should be addressed promptly as it can lead to poor engine performance and potential drivability issues. Ignoring this fault code may result in further damage to the fuel injection system.
How to diagnose DTC P1691 on Jeep
To diagnose DTC P1691 on a Jeep, a mechanic may perform the following steps:
- Use a diagnostic scanner to retrieve the fault code and any related codes
- Inspect the fuel injection pump controller for proper calibration
- Check the fuel injection pump for any signs of malfunction
- Inspect the wiring and connections in the fuel injection system
How to fix DTC P1691 on Jeep
To fix DTC P1691 on a Jeep, the following steps may be taken:
- Recalibrate the fuel injection pump controller to the correct specifications
- Repair or replace the fuel injection pump if necessary
- Address any wiring or connection issues in the fuel injection system
How to erase DTC P1691 on Jeep
To erase DTC P1691 on a Jeep, the fault code can be cleared using a diagnostic scanner. After the underlying issue has been addressed and fixed, the code can be cleared to reset the Check Engine Light.
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