DTC P1510: Engine Control Module Back-Up Power Supply Malfunction: Condition
WARNING: This page is about a different car, the 2002 Suzuki Esteem. However, it is still accessible from the selected car via links, so may be relevant.
DTC is set when ECM detects low voltage at ECM back-up power supply after engine is started. Possible causes are:
- Open circuit between DOME fuse (20-amp) and ECM.
- ECM malfunction.