Accelerator Pedal Position Sensor 2 Circuit
There’s an issue with the second accelerator pedal position sensor circuit.
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 engine control module (ECM) uses an accelerator pedal position sensor to measure how far down you press the gas pedal. This code means there’s an electrical problem with the second sensor that measures this position, which can affect engine power and throttle response.
What the computer is actually seeing
The ECM expects a voltage signal range from the second pedal position sensor, typically between 0.5V when the pedal is fully released to about 4.5V when fully depressed. When the voltage falls outside this range or there is erratic behavior, the code triggers.
What a healthy reading looks like
0.5V to 4.5V for sensor output, with a smooth increase as the pedal is pressed.
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. Inspect the wiring and connectors for the accelerator pedal position sensor 2. Look for signs of damage or corrosion. If damaged, repair or replace as needed. Decision: Are the connectors/wiring okay? Yes: Go to step 2; No: Repair/replace issues.
Common causes
- Faulty accelerator pedal position sensor 2
- Corroded or damaged wiring or connectors
- Faulty ECM due to internal issue
- Poor ground connection
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It may be safe, but expect reduced throttle response and potential limp mode. Fix it soon.
Why does this code appear with SPN 0340?
SPN 0340 is likely related to the first accelerator position sensor, indicating a broader issue with the pedal sensor system.
Could this be caused by a faulty ECM?
Yes, but check the sensors and wiring first as they are more common failure points.
Working a real vehicle right now?
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