Throttle/Pedal Position Sensor/Switch "C" Circuit
The P0225 code means the vehicle's onboard diagnostic system has detected: Throttle/Pedal Position Sensor/Switch "C" Circuit. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- moderate
- Estimated cost
- $80 - $400 (parts and labor)
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What Are the Symptoms of P0225?
- Check Engine Light on
- Reduced power mode
- Poor or no throttle response
- Engine may idle higher or lower than normal
What Causes P0225? (Most Likely First)
- Failed sensor High
- Open or shorted wiring between the sensor and the engine computer High
- Corroded or damaged connector Moderate
- Engine computer input fault Low
Can I Still Drive with P0225?
Short distances only. P0225 is rated moderate severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.
Frequently Asked Questions
What does P0225 mean?
P0225 means Throttle/Pedal Position Sensor/Switch "C" Circuit. The engine computer has detected an electrical fault in the sensor "C" circuit.
Why does my vehicle have more than one throttle or pedal sensor?
Electronic throttle systems use more than one position signal so the engine computer can cross-check them. If one disagrees or drops out, it can limit power as a safety measure.
Can I drive with P0225?
Short distances, carefully. The vehicle may drop into reduced power mode without warning, so have it repaired promptly.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose P0225?
-
Find which part carries sensor "C" on your vehicle. "Throttle/Pedal" means it may be in the throttle body or in the accelerator pedal assembly, depending on the design.
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Inspect the connector and harness for corrosion, loose pins or chafing.
-
Read sensor "C" voltage on a scan tool and compare it with the other position sensors as the throttle or pedal moves.
-
Check the sensor's reference voltage and ground, which are often shared with other sensors.
Sources 1
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
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