P042F OBD-II: Exhaust Gas Recirculation "A" Control Stuck Closed
P042F Severity
Will P042F go away on its own?
Once the vehicle's onboard system no longer detects the issue, most codes will disappear on their own. If your vehicle still has this code, however, it should be properly diagnosed to avoid a more serious problem.
For a proper diagnosis, RepairPal Certified shops have the equipment, tools, and expertise.
Moderate severity codes might not threaten the vehicle's safety or functionality immediately, but you should still get it diagnosed within a reasonable time frame to keep your car running well.
What causes OBD-II fault code P042F?
EGR (Exhaust Gas Recirculation) systems are used to reduce the combustion temperature, thus reducing emissions. If the engine control module (PCM) does not detect the amount of flow requested from the EGR, it will set code P042F.
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OBD II Fault Code
- OBD II P042F
OBD-II Code Decreased engine performance is defined as a Exhaust Gas Recirculation "A" Control Stuck Closed
EGR (Exhaust Gas Recirculation) systems are used to reduce the combustion temperature, thus reducing emissions. If the engine control module (PCM) does not detect the amount of flow requested from the EGR, it will set code P042F.
Decreased engine performance Symptoms
- Decreased engine performance
- Increased fuel consumption
Common Problems That Trigger the P042F Code
- EGR valve failure
- Powertrain Control Module (PCM) failure
- Wiring issue
Common Repairs Needed for the P042F Code
Ask our experts about P042F.
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