Exhaust Gas Recirculation (EGR) Valve Guide & Diagnostic Information
The EGR valve recirculates a portion of exhaust gas back to the engine cylinders to lower combustion temperatures and reduce NOx emissions.
Location on Vehicle
On the engine block or intake manifold, connected by a tube to the exhaust manifold.
Typical Symptoms of Failure
- Engine pinging or knocking
- Rough idling
- Poor acceleration
Associated Diagnostic Trouble Codes
A malfunction in the Exhaust Gas Recirculation (EGR) Valve can trigger the following OBD-II fault codes:
Estimated Replacement Cost
Typical cost to replace the Exhaust Gas Recirculation (EGR) Valve: $100 - $450 (parts and labor).
Citations & Authority References
This technical part definition is cross-referenced with:
- EPA On-Board Diagnostics II Standard Specifications
- SAE J2012 Automotive Component Design Regulations