Active Exhaust Gas Recirculation (EGR) Control Performance
EGR system is not functioning properly, affecting emissions control.
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 system, which helps reduce emissions by recirculating exhaust gases, isn't working right, which could lead to higher emissions and possibly cause engine performance issues.
What the computer is actually seeing
The engine control module (ECM) sees a significant difference between the desired and actual EGR flow rates, causing it to trigger a fault code when the system can't meet target levels.
What a healthy reading looks like
Expected EGR flow rate is typically between 10-15% of total airflow, with voltage signals from the EGR valve position sensor around 0.5-4.5 volts depending on the service 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.
- 1Check for any exhaust or intake leaks that could affect EGR operation. Repair if found.
- 2Inspect the EGR valve connector and wiring for damage or corrosion. Fix any issues found.
- 3Test EGR valve operation using a scan tool or multimeter; it should move freely and respond to commands. If it doesn’t, replace the EGR valve.
- 4Check the EGR position sensor voltage while the engine is running; it should fluctuate based on engine load. If it's stuck or out of range, replace the sensor.
- 5Clear the code and take the vehicle for a road test. Monitor the EGR system performance and check for codes. If the code returns, further diagnostics may be needed.
Common causes
- Clogged EGR passages
- Faulty EGR valve
- Faulty EGR position sensor
- Wiring issues
- Exhaust leaks
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It's drivable but fix it soon to avoid increased emissions and potential engine performance issues.
Will this code come back after clearing?
Yes, if the underlying issue isn't resolved, the code will likely return.
Why does this code appear with other codes?
It's common for EGR issues to trigger multiple related fault codes due to tied system failures.
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