Possible causes
– Faulty Exhaust Gas Recirculation (EGR) valve
– Carbon blockage of the pintle
– Carbon blockage of the pintle
Tech description
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 obd code mean?
The EGR pintle position was