P1530 OBD Trouble Code

1 result found

P1530 - GM
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description

Ignition Timing Adjustment Switch Circuit Conditions
Cause

Engine running in closed loop, VSS input over 1 mph and the PCM detected the Test Switch was on (circuit grounded) for 5 seconds

Try also: https://www.obd-codes.com/p1530