Possible causes
– Faulty Gear Lever X Position Sensor
– Gear Lever X Position Sensor harness is open or shorted
– Gear Lever X Position Sensor circuit poor electrical connection
– Gear Lever X Position Sensor harness is open or shorted
– Gear Lever X Position Sensor circuit poor electrical connection
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P0821 Information for specific makes
P0821 DODGE
P0821 VOLKSWAGEN
P0821 VOLKSWAGEN