Exhaust Gas Recirculation (EGR) Valve Position
EGR valve position signal is out of range or has failed.
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 computer monitors the EGR valve's position to control emissions. If it sees a signal that’s too high or low over a certain period, it sets a fault code. Basically, the valve isn't moving as it should or the signal is bad.
What the computer is actually seeing
The computer expects a signal from the EGR valve's position sensor to be within a specified range (usually 0.5V to 4.5V, depending on the system). If the voltage is above or below those values consistently, it triggers the code.
What a healthy reading looks like
EGR position should typically be between 10% and 90% of its range as reported by the sensor under operating conditions.
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 wiring and connector to the EGR valve for damage or corrosion. Repair or replace as necessary. Decision: Is the wiring good? Go to step 2 if yes, else fix wiring.
- 22. Using a scan tool, monitor the EGR valve position while the engine is running. Expected values should be between 10% and 90%. Decision: Is the reading within range? If yes, go to step 3, if no, replace the EGR valve or position sensor as needed.
- 33. Check for physical blockage in the EGR passages or intake. Clean if necessary and retest operation. Decision: Did cleaning fix the problem? If yes, clear codes and test drive. If no, diagnose further.
Common causes
- Faulty EGR valve
- Wiring issues to the EGR valve or sensor
- Failed EGR position sensor
- Blocked EGR passages
- ECU issues
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
Yes, but fix it soon. It can affect emissions and performance.
Will this code come back after clearing it?
It depends on the root cause. If the underlying issue isn't fixed, yes, it will return.
Why does this code sometimes pair with SPN 671?
SPN 671 relates to the EGR valve sensor, which can fail along with or cause similar issues as SPN 714.
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