P0474
Exhaust Pressure Sensor Intermittent
Generic code
Auxiliary Emissions Control
Medium severity
Hard repair
Free on OBD DashX
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What P0474 means
- The fault code P0474 indicates that the exhaust pressure sensor is not reading correctly. This fault may cause the engine to run poorly or not start at all.
Possible symptoms
- Illuminated check engine light
- Reduced engine power or acceleration
- Decreased fuel efficiency
- Increased exhaust emissions
Possible causes
- Failed exhaust pressure sensor
- Faulty wiring or connections in the circuit
- Loose or corroded electrical connections
- Failed engine control module (ECM)
Related parts
- Exhaust Back Pressure Sensor: Exhaust Back Pressure sensor detects any kind of back pressure in the exhaust system. Back pressure is the pressure opposite to the exhaust flow resulting in a lower power output. This car's malfunctioning back pressure sensor may lead to higher emissions & lower performance
Possible solutions
- Replace the exhaust pressure sensor
- Check and repair any damaged wiring or connections
- Tighten or clean any loose or corroded electrical connections
- Replace the engine control module (ECM) if necessary
Free on OBD DashX
P0474 on OBD DashX
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