Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car's computer is having trouble getting a steady reading from a sensor that tells it how much you're pressing the gas pedal. It's like when a video game controller doesn't work right and your character keeps stopping and starting.
The P0229 code indicates that the vehicle's computer has detected an intermittent or erratic signal from the throttle/pedal position sensor/switch C circuit.
The throttle/pedal position sensor/switch C is responsible for providing the engine control module (ECM) with data about the position of the throttle or pedal. An intermittent signal from this sensor means that the ECM is receiving inconsistent data, which can affect engine performance and drivability.
• Check Engine Light illumination
• Erratic engine behavior or stalling
• Poor acceleration or throttle response
• Faulty throttle/pedal position sensor
• Wiring issues such as frayed wires or poor connections
• Faulty ECM (Engine Control Module)
ECM: Engine Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the throttle/pedal position sensor and its wiring for damage.
• Test the sensor using a multimeter to check for intermittent signals.
• Replace the faulty throttle/pedal position sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools (screwdrivers, wrenches)
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain the throttle body and sensors.
• Ensure wiring is secure and free from damage.
• Keep the engine bay clean to prevent debris from affecting sensors.
Sensor Issue
• Avoid driving the vehicle until the issue is resolved to prevent further damage.
• Consult a professional mechanic for accurate diagnosis and repair.
Check with your vehicle manufacturer for warranty coverage on sensors and ECM components.
Intermittent issues with throttle position sensors have been common in various vehicle models, often due to wear or environmental factors.
Moderate – While the vehicle may still be drivable, the erratic behavior can lead to unsafe driving conditions.
Driving with a faulty throttle position sensor can lead to unexpected acceleration or stalling, which poses a safety risk.
• Engine running
• Vehicle in park or neutral
The throttle/pedal position sensor is typically located on the throttle body or near the accelerator pedal.
Q: Can I drive with a P0229 code?
A: It's not recommended to drive with this code active, as it can cause erratic engine behavior and affect your safety.
Q: How do I reset the P0229 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue persists, further diagnosis is needed.
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