Throttle Position - Invalid Signal
The throttle position sensor is sending an invalid signal to the engine control module.
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 computer uses the throttle position sensor to know how much the accelerator pedal is pressed. When it gets a weird signal, like it’s showing 0% when the pedal is on the floor, it freaks out and triggers the code.
What the computer is actually seeing
The ECM expects a linear response from the throttle position sensor from 0.5 volts (throttle closed) to 4.5 volts (throttle fully open). An invalid signal might be 0 volts or fluctuating voltage.
What a healthy reading looks like
At idle, the voltage should be around 0.5V; at full throttle, it should be close to 4.5V. Values that deviate significantly from this range indicate a problem.
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 throttle position sensor connector for damage or corrosion. Repair as necessary. Decision: Is the connector okay? If yes, move to step 2.
Common causes
- Bad throttle position sensor
- Wiring issues (shorts or breaks in wiring)
- ECM software issues
- Poor connection at the sensor or connector
Typical repair cost
$$
Related codes
Frequently asked questions
Can I drive with this code?
Yes, but it could cause poor performance and increased emissions, so fix it soon.
Will the code come back after clearing it?
If the underlying issue isn't fixed, then yes, it likely will.
Why does this code sometimes pair with others?
Multiple codes can indicate a larger issue with the throttle system or wiring.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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