P1406 CHEVROLET - EGR Valve Pintle Position Circuit
- Faulty Exhaust Gas Recirculation (EGR) valve
- Carbon blockage of the pintle
The P1406 code means that the EGR valve is 10% of the expected position by the Powertrain Control Module (PCM), usually caused by carbon built up n the EGR valve. Start by cleaning the EGR valve.
When is the code detected?
The EGR pintle position was ±10% of the expected position.
- Engine Light ON (or Service Engine Soon Warning Light)
P1406 CHEVROLET Description
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