Accelerator Pedal Position Sensor 1 Voltage Above Normal
Indicates high voltage from the accelerator pedal position sensor.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The accelerator pedal position sensor measures how far you've pressed the gas pedal, sending a voltage signal to the computer. If the voltage is higher than expected (usually above 5 volts), it means there's a problem with the sensor or wiring.
What the computer is actually seeing
The engine control unit (ECU) sees a voltage reading from the accelerator pedal position sensor that exceeds the normal range, indicating potential sensor failure or wiring issues.
What a healthy reading looks like
Normal voltage range is typically between 0.5 volts (idle) and 4.5 volts (full throttle).
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 1Check the accelerator pedal position sensor connector for corrosion or damage.
- 2Inspect the wiring between the sensor and the ECU for any signs of wear or damage.
- 3Using a multimeter, measure the voltage at the accelerator pedal position sensor connector with the ignition on and the pedal not pressed. Expected value is 0.5 volts.
- 4Press the accelerator pedal slowly and monitor the voltage increase. It should rise smoothly to around 4.5 volts at full throttle.
Common causes
- Faulty accelerator pedal position sensor
- Damaged wiring or connectors
- Short circuit in the sensor circuit
- Corrosion at the connector
- Faulty ECU software
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code present?
It's drivable, but be cautious as throttle response may be inconsistent.
Will the code come back after clearing it?
If the issue isn't fixed, yes, the code will return.
Why does this code appear with other codes?
Commonly, wiring issues or a bad sensor can cause multiple faults related to throttle position.
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