P0227

Throttle/Pedal Position Sensor/Switch C Circuit Low

Severity

🔴 High

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$28–200 (est.)

Symptoms

Switching to emergency mode
Dips and jerks when pressing the gas pedal
High or unstable idle speed
Check Engine Light Illuminates
Maximum speed limit

Causes

Channel C signal wire short to ground
Broken signal wire or power wire
Sensor potentiometer wear
No 5V reference voltage from ECU
Damage to the sensor housing due to vibration or overheating

How to Fix

Read codes and check for other pedal/throttle sensor errors
Check the 5 V reference voltage at the sensor connector
Measure the voltage of channel C signal when pressing the pedal
Check the wiring harness for open circuit and short to ground.
Clean the contacts of the sensor connector
If necessary, replace the accelerator pedal position sensor or throttle valve

Related codes

P0220 P0221 P0222 P0225 P0226 P2138