Dodge DTC P1691 – Fuel Injection Pump Controller Calibration Failure
DTC P1691 meaning on Dodge
The DTC P1691 for Dodge indicates a Fuel Injection Pump Controller Calibration Failure. This fault code is related to the calibration of the fuel injection pump controller, which is crucial for the proper functioning of the fuel system in the vehicle.
Dodge DTC P1691 symptoms
Some common symptoms associated with DTC P1691 on Dodge vehicles may include:
- Engine misfires or rough idling
- Decreased fuel efficiency
- Engine stalling or hesitation
- Difficulty starting the engine
Dodge DTC P1691 causes
The potential causes of DTC P1691 on Dodge vehicles can include:
- Issues with the fuel injection pump controller
- Calibration errors in the fuel system
- Electrical faults in the fuel injection system
- Problems with the fuel pressure regulator
Dodge DTC P1691 seriousness
DTC P1691 should be addressed promptly as it can lead to poor engine performance, reduced fuel efficiency, and potential drivability issues. Ignoring this fault code may result in further damage to the fuel system components and could potentially leave the vehicle inoperable.
How to diagnose DTC P1691 on Dodge
Diagnosing DTC P1691 on a Dodge vehicle typically involves:
- Using a diagnostic scanner to retrieve the fault code
- Inspecting the fuel injection pump controller for any visible damage
- Checking the fuel system components for proper operation
- Testing the electrical connections related to the fuel injection system
How to fix DTC P1691 on Dodge
To address DTC P1691 on a Dodge vehicle, you may need to:
- Repair or replace the fuel injection pump controller if faulty
- Calibrate the fuel system components as per manufacturer specifications
- Address any electrical issues in the fuel injection system
- Ensure proper functioning of the fuel pressure regulator
How to erase DTC P1691 on Dodge
To clear DTC P1691 from the vehicle’s system, you can:
Recommended tools for Dodge diagnostics
Explore our expert picks: The Best OBD2 Scanners for 2025
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.