P1285 – Jeep DTC

Jeep DTC P1285 – Fuel Injection Pump Controller Always On

DTC P1285 meaning on Jeep

DTC P1285 on a Jeep indicates a fault with the Fuel Injection Pump Controller Always On. This means that the engine control module (ECM) has detected that the fuel injection pump controller is continuously powered, even when it should not be.

Jeep DTC P1285 symptoms

Symptoms of DTC P1285 on a Jeep may include:

• Check Engine Light illuminated
• Engine running rough
• Decreased fuel efficiency
• Engine stalling

Jeep DTC P1285 causes

Common causes of DTC P1285 on a Jeep include:

• Faulty fuel injection pump controller
• Wiring issues or shorts in the circuit
• Defective engine control module (ECM)

Jeep DTC P1285 seriousness

DTC P1285 should be addressed promptly as it can lead to drivability issues and potential engine damage if left unresolved. Ignoring this fault may result in poor engine performance and increased fuel consumption.

How to diagnose DTC P1285 on Jeep

To diagnose DTC P1285 on a Jeep, a mechanic may perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code
2. Inspect the wiring harness for any visible damage or shorts
3. Test the fuel injection pump controller for proper operation
4. Check the ECM for any signs of malfunction

How to fix DTC P1285 on Jeep

To fix DTC P1285 on a Jeep, the following steps may be taken:

1. Repair or replace any damaged wiring in the circuit
2. Replace the faulty fuel injection pump controller if necessary
3. If the ECM is found to be defective, it may need to be replaced
4. Clear the fault code and test drive the vehicle to ensure the issue is resolved

How to erase DTC P1285 on Jeep

To erase DTC P1285 on a Jeep, follow these steps:

1. Use a diagnostic scanner to clear the fault code
2. If the underlying issue has been fixed, the Check Engine Light should turn off
3. Perform a test drive to confirm that the fault code does not return

Recommended tools for Jeep 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.