P2122critical severityPowertrain
Throttle/Pedal Position Sensor/Switch D Circuit Low
on 2017 Chevrolet Impala 2.5L I4 Ecotec · AWD
What this code means
Low voltage from accelerator pedal position sensor D.
Symptoms
- Limp mode
- Engine at idle
- Check engine light
Common causes
- Failed APP sensor
- Short to ground in wiring
- Corroded connector
Diagnostic steps
- Measure voltage at APP sensor D
- Check wiring
- Swap sensor if dual-assembly
Repair notes
Replace accelerator pedal assembly or repair wiring.
Other Powertrain codes on this vehicle
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P0001
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P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0002
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P0003
Fuel Volume Regulator Control Circuit Low
P0003
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P0004
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P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0010
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