Throttle Position Sensor 2 Voltage Above Normal Operating Range
Throttle Position Sensor 2 is reporting an out-of-range voltage.
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) tells the engine how far you open the throttle. If it sends a voltage that’s too high, the engine thinks you're pressing the pedal too hard, causing poor performance or stalling.
What the computer is actually seeing
The ECM expects TPS voltage to vary between 0.5V (idle) to 4.5V (full throttle). A voltage above 4.5V indicates a fault in the sensor or wiring.
What a healthy reading looks like
0.5V to 4.5V for normal operation; above 4.5V indicates a fault.
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 for any visible damage to the throttle position sensor wiring and connectors.
- 2Using a multimeter, measure the voltage at the TPS connector when key is ON and engine OFF. It should be between 0.5V and 4.5V.
- 3If the voltage is above 4.5V, inspect the wiring for shorts to power or ground. Repair as needed.
- 4If wiring is okay, replace Throttle Position Sensor 2 and clear the codes.
Common causes
- Faulty Throttle Position Sensor 2
- Wiring issues (shorts or frays)
- Poor electrical connections
- Software glitches in the ECM
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
It's not recommended to drive as it may cause stalling or poor acceleration.
Will this code come back after clearing it?
If the underlying issue is not resolved, the code will likely return.
Why does this code pair with SPN 0355?
SPN 0355 and SPN 0356 both relate to throttle position sensors, often indicating multiple sensor issues.
Working a real vehicle right now?
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