Feilkodeindeks · medium
P1657
Throttle motor relay coil drive circuit ON failure
Throttle motor relay coil drive circuit ON failure
Scope: 2.5L/3.0L gasoline · System(s): EMS OBD II · Factory MIL flag: 2 · Default action: ECM Default: –Throttle opening limited to 30% –Vehicle speed limited –Speed control inhibited
Common causes
- Throttle motor relay failure Throttle motor relay coil to ECM drive circuit: short circuit to B+ voltage
Quick checks
- Confirm freeze-frame and conditions when the code set
- Inspect connectors, grounds, and harness for the circuit named in the code
- Swap coil/plug to another cylinder if misfire is cylinder-specific