Exhaust Gas Pressure Sensor Out of Range
The exhaust gas pressure sensor is reporting a pressure value that is outside the expected range.
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What it means (plain English)
The exhaust gas pressure sensor measures how much pressure is in the exhaust system and when it reads too high or too low, it sets this code.
What the computer is actually seeing
The engine control unit expects a specific pressure range from the exhaust gas pressure sensor, usually between 0.5 to 3.5 psi during normal operation. If the sensor reads outside this range, typically below 0.1 psi or above 4.0 psi, it triggers the fault.
What a healthy reading looks like
0.5 to 3.5 psi under normal conditions.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 1Check the wiring and connectors to the exhaust gas pressure sensor for damage or corrosion.
- 2Measure the exhaust gas pressure with a manual gauge; it should be in the range of 0.5 to 3.5 psi during operation. If it's outside this range, note the value and proceed.
- 3Inspect the exhaust system for blockages or restrictions. Clear any obstructions found.
- 4Replace the exhaust gas pressure sensor if wiring and exhaust are confirmed good and sensor reads outside the expected values.
Common causes
- Faulty exhaust gas pressure sensor
- Damaged wiring or connectors to the sensor
- Clogged exhaust components (DPF, muffler)
- Incorrect installation of exhaust system parts
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It’s not recommended to drive long distances with this code. It can affect engine performance and emissions.
Will this code come back after clearing?
If the underlying issue isn't resolved, yes, the code will likely return.
Why does this code appear after changing the DPF?
If the DPF is clogged or improperly installed, it can affect the exhaust pressure readings, triggering this code.
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