P2123critical severityPowertrain
Throttle/Pedal Position Sensor/Switch D Circuit High
on 1998 Subaru Forester 2.5L H4 · AWD
What this code means
High voltage from accelerator pedal position sensor D.
Symptoms
- Limp mode
- Unintended acceleration
- Check engine light
Common causes
- Open ground circuit
- Short to voltage
- Failed sensor
Diagnostic steps
- Measure voltage at APP sensor D
- Check for opens in ground
- Inspect wiring
Repair notes
Replace pedal assembly or repair wiring.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1