P0470 Code: Exhaust Pressure Sensor A Circuit
🟠 Moderate severity · drivable
Drivable, but exhaust pressure readings are off, which can hurt fuel economy and emissions controls.
What P0470 means
The exhaust pressure sensor, which measures backpressure in the exhaust (common on diesel and turbo engines), has a circuit fault. The computer can't get a valid reading, which can affect emissions controls like EGR.
Symptoms
- Check engine light is on
- Reduced fuel economy
- Possible loss of power
- Possible failed emissions test
Common causes
- most common: Faulty exhaust pressure sensor
- common: Damaged wiring or loose connector
- common: Clogged sensor hose or port
- rare: Faulty PCM
How to fix it
| Fix | DIY? | Typical cost |
|---|---|---|
| Inspect and clean the sensor hose and port | Yes | $5–20 |
| Check the wiring and connector and repair as needed | Yes | $20–100 |
| Replace the exhaust pressure sensor | Yes | $50–150 |
Frequently asked questions
Can I drive with a P0470 code?
Yes, but the computer can't read exhaust backpressure, which can affect fuel economy and emissions controls.
What does P0470 mean?
The exhaust pressure sensor circuit is faulty, so the computer can't measure exhaust backpressure.
How much does it cost to fix P0470?
Usually $50–150 for a new sensor, plus a little more for wiring or hose repairs.
Related codes
P0471
P0471 Code: Exhaust Pressure Sensor A Circuit Range/Performance
P0472P0472 Code: Exhaust Pressure Sensor A Circuit Low
P0473P0473 Code: Exhaust Pressure Sensor A Circuit High
Updated 2026-08. This page is informational and not a substitute for professional diagnosis.