WK2 SRT8 Malfunction Code PO471 - Jeep Garage - Jeep Forum

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Old 03-25-2016, 10:55 PM
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WK2 SRT8 Malfunction Code PO471

Hi all so I just picked up me 13 SRT8 from the dealer today and as I was driving home noticed the check engine light was on. Took it to my brows house had him run the codes and it came back with PO471 any ideas ? Truck has a cold air intake and a flowmaster exhaust...


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Old 03-26-2016, 02:07 AM
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Re: WK2 SRT8 Malfunction Code PO471

P0471 code
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Old 03-26-2016, 02:08 AM
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Re: WK2 SRT8 Malfunction Code PO471

P0471-EXHAUST PRESSURE SENSOR 1 PERFORMANCE

Theory of Operation




The Exhaust Gas Pressure Sensor is used to measure exhaust gas pressure in
the exhaust manifold. The Powertrain Control Module (PCM) provides a 5 volt
supply to the Exhaust Gas Pressure Sensor on the sensor supply circuit. The PCM
also provides a ground on the sensor return circuit. The Exhaust Gas Pressure
Sensor provides a signal to the PCM on the Exhaust Gas Pressure Sensor Signal
circuit.




•When Monitored:
Five seconds after key on.
•Set Condition:
The Exhaust Gas Pressure Sensor reading at key on differs by a calibrated
amount of pressure from the Barometric Pressure Sensor or the Exhaust Gas
Pressure Sensor reading varies from an estimated value during normal engine
operation.



Possible Causes


PRESSURE HOSE DISCONNECTED
PRESSURE HOSE PLUGGED OR CRUSHED
DEBRIS PLUGGING THE PRESSURE SENSOR PORT
EXHAUST GAS PRESSURE SENSOR
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