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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.

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