EGR Position Sensor Circuit Range/Performance Problem
This code indicates a problem with the EGR position sensor's performance or range.
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 EGR (Exhaust Gas Recirculation) system helps reduce emissions by recirculating some exhaust back into the intake. If the sensor monitoring the EGR’s position is out of range, it means the vehicle's computer can't accurately check how well the EGR is working, which can mess with emissions control.
What the computer is actually seeing
The engine control module (ECM) expects the EGR position sensor to produce a voltage signal between 0.5V to 4.5V based on the EGR valve position. If the signal is outside this range or doesn’t change with EGR operation, it triggers this code.
What a healthy reading looks like
EGR position voltage should be between 0.5V (fully closed) and 4.5V (fully open) during operation, with specific values depending on engine load and RPM.
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 for any obvious wiring issues on the EGR position sensor connector; repair any found.
- 22. Connect a scanner and monitor the EGR position sensor voltage while the engine is running at idle and under load. Is the voltage within 0.5V to 4.5V? If yes, go to step 6, if no, go to step 3.
- 33. Inspect the EGR position sensor for damage or corrosion. Replace if necessary.
- 44. Check EGR valve operation; manually actuate the valve. Does it move freely? If no, clean or replace EGR valve. If yes, go to step 5.
- 55. Test the EGR position sensor; if it reads outside of specifications, replace it. Was this the fix? If yes, clear code and re-test. If no, check for wiring issues between sensor and ECM.
- 66. Clear the code and road test the vehicle. Does the code return? If yes, further ECM diagnostics may be needed.
Common causes
- Faulty EGR position sensor
- Wiring issues (frayed, shorted, or open circuit)
- Faulty EGR valve or actuator
- Corroded connectors
- Carbon buildup affecting EGR operation
Typical repair cost
$$$ (around $200-$600)
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's best to fix it soon as it can affect emissions and engine performance.
Will the code come back after clearing?
If the underlying issue isn’t resolved, yes, the code is likely to return.
Why does it pair with EGR codes?
EGR position sensor codes often indicate issues with the EGR system itself or its components.
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