What is the EVP Position Sensor all about?
EVP stands for EGR Valve Position. The EGR valve feeds a small amount of exhaust gas back into the engine to reduce emissions. The EVP sensor tells the engine computer how far that valve is open. It is common on Ford vehicles, such as the Ranger, Focus and Everest.
Keep in mind:
- A clogged EGR valve and carbon build-up are more common than a failed sensor, and they produce the same symptoms.
- Poor-quality fuel makes carbon build-up worse.
- The mechanic should test the valve and sensor together.
How it's done:
- Fault codes are read with a scan tool.
- The EGR valve and passages are checked for blockage.
- The sensor is tested and replaced if faulty.
- The valve is cleaned if needed and the engine is road tested.
Our recommendation:
If the check engine light is on, have it scanned before replacing parts. Cleaning the EGR system is often part of the fix.
What common symptoms indicate you may need to replace the EVP Position Sensor?
Rough idle or stalling. Hesitation when you accelerate. The check engine light is on. Poor fuel economy. A failed emissions test.
How important is this service?
Moderately important. The car usually still runs, but poor running, higher fuel use and engine damage can follow if it is left.
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