Throttle/Pedal Position Sensor/Switch 'D' Circuit Range/Performance Problem
There's an issue with the throttle position sensor performance.
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 Throttle Position Sensor (TPS) measures how far the throttle is open; if it's giving bad readings, the engine might not get the right amount of air, causing poor performance.
What the computer is actually seeing
The engine control module (ECM) expects the TPS to output a voltage range between 0.5V (closed) and 4.5V (fully open) depending on the pedal position. If the readings are too low (below 0.1V) or too high (above 4.9V), it triggers the code.
What a healthy reading looks like
TPS expected range: 0.5V to 4.5V; minimum 0.1V and maximum 4.9V for proper operation.
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.
- 1Inspect throttle position sensor wiring and connectors for damage and corrosion. Repair as needed. Decision: If wiring is good, proceed to step 2. If not, fix wiring issues.
Common causes
- Faulty throttle position sensor
- Wiring issues (frayed, corroded, or loose connections)
- ECM software bugs or corruption
- Accelerator pedal assembly malfunction
Typical repair cost
$$ to $$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's drivable but can affect acceleration and engine response, so drive cautiously.
Will this code come back after resetting?
If the underlying problem persists, the code will likely return.
Why does this code pair with P2135?
P2135 indicates a fault in the correlation between two or more throttle position sensors; it's common to see these codes together.
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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