EGR Position Sensor Circuit High
The Engine Control Module (ECM) detects a high voltage in the EGR position sensor circuit.
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What it means (plain English)
The EGR position sensor tells the engine how much exhaust gas is recirculating. If the signal is too high, the computer thinks something's wrong and throws a code.
What the computer is actually seeing
The ECM is monitoring the voltage from the EGR position sensor. Normal ranges are typically between 0.5V (closed) and 4.5V (fully open). If the signal goes above 4.5V, it triggers SPN 4513.
What a healthy reading looks like
EGR Position Sensor should read between 0.5V and 4.5V; if readings exceed 4.5V, code will trigger.
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.
- 11. Check the wiring and connector for the EGR sensor. Look for any frayed wires or corrosion. If found, repair or replace the wiring/connector.
- 22. Using a multimeter, measure the voltage at the EGR position sensor while the engine is running. Values should be between 0.5V and 4.5V. If above 4.5V, replace the EGR position sensor.
- 33. Verify the EGR functionality by checking for excessive carbon buildup. If present, clean the EGR valve and re-test.
- 44. If the EGR sensor is within range and operational, check for ECM updates or recalibration issues.
Common causes
- Faulty EGR position sensor
- Wiring issues or shorts in the harness
- Faulty ECM or software issues
- Poor ground connections
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
It's best to fix it soon; while you might still drive, it can affect emissions and performance.
Will this code come back after clearing?
If the underlying issue isn't fixed, yes, it will return.
Why does this code often appear with others?
It can signal issues with the EGR system, commonly related to poor sensor readings or valve malfunctions.
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