P0470
Exhaust Pressure Sensor Malfunction
Moderateexhaust
Overview
The P0470 code means the PCM has detected a exhaust pressure sensor malfunction fault. This code relates to the exhaust system components that manage and monitor exhaust gas flow and pressure. An issue in the exhaust system can affect engine efficiency, emissions output, and overall vehicle performance.
Symptoms
- Check Engine Light (MIL) illuminated
- Reduced engine performance
- Exhaust smell inside the cabin
- Poor fuel economy
Common Causes
- Cracked or leaking exhaust pipes
- Failed exhaust pressure control valve
- Damaged exhaust manifold or gasket
- Faulty exhaust pressure sensor
Diagnosis Steps
- 1Connect an OBD-II scanner and read all stored trouble codes and freeze frame data
- 2Visually inspect the exhaust system for leaks, cracks, or damage
- 3Test the exhaust pressure sensor with a multimeter
- 4Check the exhaust pressure control valve for proper operation
- 5Inspect wiring and connectors for the exhaust pressure circuit
Estimated Repair Cost
$150 — $1,200
Cost varies by vehicle, location, and repair shop. Includes parts and labor.
Commonly Affected Vehicles
Ford ExplorerHonda PilotSubaru CrosstrekJeep Cherokee
Related Codes
More Exhaust Codes
Frequently Asked Questions
Minor exhaust codes may not affect immediate drivability, but exhaust leaks can allow harmful gases into the cabin. Have exhaust issues inspected promptly for safety reasons.