P1605 – Ford DTC

Ford DTC P1605 – PCM Keep Alive Memory Test Error

DTC P1605 meaning on Ford

DTC P1605 on a Ford vehicle indicates a PCM (Powertrain Control Module) Keep Alive Memory Test Error. This error code is triggered when the PCM detects a fault in the Keep Alive Memory (KAM) self-test process.

Ford DTC P1605 symptoms

Symptoms of DTC P1605 on a Ford may include:

• Check Engine Light (MIL) illuminated
• Engine running rough
• Engine stalling or hesitation
• Reduced fuel efficiency

Ford DTC P1605 causes

Common causes of DTC P1605 on a Ford include:

• Weak or dead vehicle battery
• Faulty PCM
• Intermittent electrical connection issues
• Corroded or damaged wiring

Ford DTC P1605 seriousness

DTC P1605 is considered a moderate seriousness issue. While it may not cause immediate harm to the vehicle, it can lead to drivability issues and potential long-term damage if left unresolved.

How to diagnose DTC P1605 on Ford

To diagnose DTC P1605 on a Ford, follow these steps:

1. Use an OBD-II scanner to retrieve the specific error code.
2. Inspect the vehicle battery for proper voltage and condition.
3. Check for any visible signs of wiring damage or corrosion.
4. Perform a PCM self-test to further diagnose the issue.

How to fix DTC P1605 on Ford

To fix DTC P1605 on a Ford, you can try the following:

1. Ensure the vehicle battery is in good condition and properly connected.
2. Repair any damaged or corroded wiring connections.
3. If necessary, replace the PCM with a new or refurbished unit.
4. Clear the error code and perform a test drive to verify the issue has been resolved.

How to erase DTC P1605 on Ford

To erase DTC P1605 on a Ford:

1. Use an OBD-II scanner to clear the error code.
2. Disconnect the vehicle battery for a few minutes to reset the PCM.
3. Reconnect the battery and start the vehicle to ensure the error code has been successfully cleared.