DTC P1530: Ignition Timing Adjustment Switch 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 ECM detects low voltage at ignition timing adjustment switch circuit when driving vehicle. Possible causes are:
- Short to ground in circuit between ignition timing adjustment test switch and ECM.
- ECM malfunction.