P0229 — Throttle/Pedal Position Sensor/Switch C Circuit High Input
Drive with caution — fix soon.
What P0229 means
This code means the third throttle or pedal position sensor (sensor C) is sending a voltage signal that's too high for the conditions. It's commonly caused by a faulty sensor, a short to voltage in the wiring, or a bad connector pushing the signal up. Repairs usually involve testing and replacing the sensor or fixing the wiring, and it's normally a straightforward fix.
Common symptoms
- Check engine light is on
- Engine enters reduced-power or limp mode
- Poor or delayed throttle response
- Rough idle or stalling
- Surging or uneven acceleration
Common causes
- Faulty throttle/pedal position sensor (C circuit)
- Short to voltage in the signal wiring
- Corroded or damaged sensor connector
- Wiring chafe or open circuit
- Faulty throttle control module
Typical repair cost
$120 – $400
Varies by vehicle and root cause.
Frequently asked questions
Can I keep driving with a P0229 code?
Short trips are usually fine, but the car may go into reduced-power mode. Because throttle response is affected, it's best to get it checked promptly rather than driving on it long-term.
How much does it cost to fix a P0229 code?
Repairs typically range from $120 to $400. Replacing the throttle position sensor is the most common fix, while wiring or connector repairs can change the price.
Is a P0229 code serious?
It's moderately serious. The car may still drive, but unreliable throttle behavior is a safety concern, so don't leave it unaddressed.
What does 'high input' mean in this code?
It means the sensor's signal voltage is higher than the computer expects. This usually points to a short to power, a failing sensor, or a connector problem rather than a mechanical issue.