EGR Position Sensor 1 (Voltage)
EGR position sensor voltage is out of normal range.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The EGR position sensor measures how much exhaust gas is recirculated back into the engine. If the voltage it sends to the computer is too high or low, the engine can lose efficiency.
What the computer is actually seeing
The Engine Control Module (ECM) monitors the EGR position sensor voltage, expecting it to be between 0.5V and 4.5V in most cases. A voltage out of this range triggers the fault code.
What a healthy reading looks like
EGR position sensor should output between 0.5V and 4.5V under normal conditions, reflecting the position of the EGR valve.
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 wiring and connectors for damage or corrosion. Repair as needed.
- 2Measure the EGR position sensor voltage with a multimeter. It should be within 0.5V to 4.5V.
- 3If voltage is out of range, replace the EGR position sensor and retest.
- 4If the sensor tests good, check the operation of the EGR valve itself.
Common causes
- Faulty EGR position sensor
- Wiring issue or connector corrosion
- Faulty EGR valve
- ECM/software issue
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It is moderate severity, so it's best to fix it soon to avoid potential drivability issues.
What happens if I ignore this code?
Ignoring this may lead to reduced engine performance and possibly trigger a limp mode.
Why is this paired with other codes?
Multiple codes may indicate a systemic issue affecting the exhaust system or related sensors.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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