P20A3 FORD - Reductant Purge Control Valve Circuit High
P20A3 FORD Possible Causes
- Faulty Reductant Purge Control Valve
- Reductant Purge Control Valve harness is open or shorted
- Reductant Purge Control Valve circuit poor electrical connection
First diagnose P20A3 FORD code
Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.
Cost of diagnosing the P20A3 FORD code
Labor: 1.0The cost of diagnosing the P20A3 FORD code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
P20A3 FORD Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P20a3 Ford DescriptionIn order to reverse the reductant flow direction (for line purge) a 4-2-way valve (reverting valve) needs to be switched. The valve is switched by a solenoid.
The reverting valve functional check monitors the pressure drop when the purge cycle is started. To run this test the pressure level must exceed a calibration threshold (280 kPa) at beginning of test. For a successful test result, the pressure must drop by another threshold (230 kPa) within the time.
If the test is not successfully passed the purge cycle will be terminated immediately because of the risk of uncontrolled injection of reductant into the exhaust pipe.
P20A3 FORD More InformationNeed more information on how to fix the P20A3 FORD code?
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