P1488 – Chrysler DTC

Chrysler DTC P1488 – Auxiliary 5 Volt Supply Output Too Low

DTC P1488 meaning on Chrysler

DTC P1488 on a Chrysler vehicle indicates that the Auxiliary 5 Volt Supply Output is too low. This diagnostic trouble code is triggered when the Engine Control Module (ECM) detects that the voltage output from the 5-volt reference circuit is below the specified range.

Chrysler DTC P1488 symptoms

Symptoms of DTC P1488 on a Chrysler may include:

• Check Engine Light illuminated
• Engine running rough
• Reduced engine performance
• Difficulty starting the engine

Chrysler DTC P1488 causes

Common causes of DTC P1488 on a Chrysler include:

• Failed 5-volt reference circuit
• Short circuit or open circuit in the wiring harness
• Faulty Engine Control Module (ECM)

Chrysler DTC P1488 seriousness

DTC P1488 should be addressed promptly as it can lead to engine performance issues and potential drivability concerns. Ignoring this fault may result in further damage to engine components.

How to diagnose DTC P1488 on Chrysler

To diagnose DTC P1488 on a Chrysler, a mechanic should perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code and freeze frame data
2. Inspect the 5-volt reference circuit for any signs of damage or corrosion
3. Check the wiring harness for continuity and shorts
4. Test the voltage output from the 5-volt reference circuit using a multimeter

How to fix DTC P1488 on Chrysler

To fix DTC P1488 on a Chrysler, the following steps can be taken:

1. Repair any damaged wiring or connectors in the 5-volt reference circuit
2. Replace the Engine Control Module (ECM) if deemed faulty
3. Clear the fault code and perform a test drive to ensure the issue is resolved

How to erase DTC P1488 on Chrysler

To erase DTC P1488 on a Chrysler, follow these steps:

1. Use a diagnostic scanner to clear the fault code
2. If the issue has been fixed, the Check Engine Light should turn off
3. Perform a final check to ensure the fault code does not return

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