Error Code P0471: Exhaust Pressure Sensor Range/Performance. Error Code P0471 is defined as Exhaust Pressure Sensor Range/Performance. This means the PCM has detected a voltage that is out of the normal range, a problem caused by exhaust back pressure system.
What does trouble code p0455 mean on a car?
Any large leak in your evaporative emission control system, or EVAP system, can signal trouble code P0455. You may be wondering, how do I fix trouble code P0455? Learn more about this helpful emissions system and how you can restore your vehicle and remove this trouble code.
What causes the p0471 error code on a Toyota Corolla?
There are a number of things that could cause Error Code P0471, including the following: Faulty exhaust back pressure sensor Shorted or open exhaust back pressure sensor Poor electrical connection with exhaust back pressure sensor circuit Blocked or clogged tube that runs from pressure sensor to the exhaust manifold
How do you fix code p0455 on an EVAP system?
Gas caps are relatively inexpensive and are usually the fix for code P0455. Pinch off the vent tube to the EVAP Vent Control Valve. Pressurize the EVAP system with an EVAP smoke machine leak checker. Check to see if you see any smoke leaking out from any hoses or seals.
Why is there a code on the exhaust pressure sensor?
That’s not to say you wouldn’t necessarily get this code in a VW or other make though. This code is strictly concerned about the incoming signal from the exhaust pressure sensor not matching intake manifold pressure or ambient air pressure at key on.
How much does it cost to diagnose a p0471 code?
The cost to diagnose the P0471 code is 1.0 hour of labor. The auto repair’s diagnosis time and labor rates vary by location, vehicle’s make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
