Exhaust Gas Recirculation (EGR) Valve Position Sensor
This code indicates an issue with the EGR valve 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 engine computer checks the position of the EGR valve, which controls exhaust gases re-entering the engine. If the signal is too high or too low, it triggers this code.
What the computer is actually seeing
The EGR valve position sensor sends a voltage signal corresponding to the valve position to the engine control module (ECM). The expected signal range is typically between 0.5V (closed) and 4.5V (fully open).
What a healthy reading looks like
EGR valve position sensor voltage should read between 0.5V and 4.5V, with around 2.5V for 50% 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 EGR valve wiring and connector for damage or corrosion. Repair if necessary. Move to step 2.
- 22. Use a multimeter to check the EGR valve position sensor voltage while manually moving the EGR valve. Expected voltage should change continuously between 0.5V and 4.5V. If not, replace the sensor. Move to step 3.
- 33. Inspect the EGR valve itself for sticking or blockage. Clean or replace the valve if it fails to operate properly.
Common causes
- Faulty EGR valve position sensor
- Wiring damage or short to the sensor
- EGR valve stuck open or closed
- Intake leaks affecting sensor readings
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
Driving with this code can cause poor engine performance and increased emissions. It's best to address it soon.
Will the code come back after clearing?
If the underlying issue isn't fixed, yes, the code will likely return.
Why does this code pair with others?
The EGR system is interconnected with other systems, causing multiple codes if there's a failure.
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