P0121high severityPowertrain
Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance
on 2010 Cadillac CTS 3.0L V6 · AWD
What this code means
The TPS signal does not match expected values for the current operating conditions.
Symptoms
- Check Engine Light
- Erratic throttle response
- Stalling
- Hesitation
- Limp mode
Common causes
- Worn TPS
- Carbon buildup on throttle body
- Sticking throttle plate
- Loose throttle cable
Diagnostic steps
- Monitor TPS signal during throttle sweep
- Check for flat spots or dropouts
- Clean throttle body
- Inspect throttle cable/linkage
Repair notes
Clean throttle body. Replace TPS if signal is erratic.
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Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1