Throttle Position Sensor 1 - Voltage Above Normal Operating Range
Throttle position sensor voltage is too high.
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What it means (plain English)
The throttle position sensor measures how far the gas pedal is pressed. If it reads much higher than normal, around 5 volts, the engine computer thinks there's a problem with the pedal input.
What the computer is actually seeing
The engine control unit (ECU) sees a voltage level from the throttle position sensor (TPS) that exceeds its maximum threshold, typically above 4.5 volts.
What a healthy reading looks like
Normal TPS voltage ranges from 0.5V (closed) to 4.5V (fully open).
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.
- 11. Check the throttle position sensor's connector for damage or corrosion. Repair if needed. Decision: Is the connector okay?
- 22. Inspect wiring from the sensor to the ECU for shorts or breaks. Repair any damaged wiring. Decision: Is the wiring intact?
- 33. With the key ON and engine OFF, measure the voltage at the TPS connector. It should be under 4.5V. Decision: Is the voltage correct?
- 44. If the voltage is high, replace the throttle position sensor. If the voltage is normal but the code persists, check the ECU for faults.
Common causes
- Faulty throttle position sensor
- Wiring or connector issues
- ECU malfunction
- Mechanical binding in the throttle linkage
Typical repair cost
$$-$$$
Related codes
Frequently asked questions
Can I still drive if this code is active?
It's drivable but may experience performance issues or rough idling.
Will this code disappear on its own?
Not likely; it usually requires repairs related to wiring or the sensor.
Why did this code appear alongside SPN 6810?
Both codes relate to throttle position issues, often indicating similar problems.
Working a real vehicle right now?
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