What does code P1605 mean?

Q: What does code P1605 mean?

Keep Alive Memory Test Failure. P1605 on a Jaguar means the engine control module (ECM) has detected a failure in its keep alive memory (KAM) test, which is the battery-backed memory that stores adaptive learning values and fault history when the ignition is off. The ECM runs a self-check at power-up and flags this code when the stored data cannot be read or verified correctly.

DTC codes / Jaguar codes / P1605

P1605 · JaguarKeep Alive Memory Test Failure

P1605 on a Jaguar means the engine control module (ECM) has detected a failure in its keep alive memory (KAM) test, which is the battery-backed memory that stores adaptive learning values and fault history when the ignition is off. The ECM runs a self-check at power-up and flags this code when the stored data cannot be read or verified correctly.

SystemPowertrain

Code typeJaguar specific

SeverityMedium

Fix difficultyIntermediate

AreaComputer and output circuits

Guidance is general and written for Jaguar vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.