DTC P1500: Starter Signal Circuit 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 engine start signal is not detected by Engine Control Module (ECM) when engine is started. DTC is also set when ECM detects engine start signal while engine is running. MIL is illuminated when ECM detects malfunction during 2 consecutive drive cycles. Possible causes are:
- Engine start signal circuit malfunction.
- ECM malfunction.