P0227
PowertrainThrottle Positionhigh severityThrottle/Pedal Position Sensor/Switch C Circuit Low
What P0227 Means
The C throttle or pedal position sensor is reporting an abnormally low voltage. This usually points to a short to ground or a failed sensor.
Symptoms
- Check engine light on
- Reduced power mode
- Poor throttle response
Common Causes
- Short to ground in wiring
- Failed sensor C
- Corroded connector
- Faulty PCM
Diagnostic Steps
- Read trouble codes
- Check signal voltage at sensor
- Inspect wiring for short to ground
- Replace sensor if faulty
🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
✓ ANCEL official store
Serious DIY~$100
BlueDriver Pro →
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SHOP FAVORITEShop-grade tablet~$300
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
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