Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Circuit Description
EGR valve is equipped with an internal position sensor to determine pintle valve position. PCM controls the EGR solenoid by supplying ignition voltage whenever exhaust gas needs to be recirculated into intake manifold. PCM monitors EGR solenoid and position sensor circuits for correct voltage levels at certain times. DTC will set when EGR solenoid is commanded off and feedback voltage at PCM is high.
DTC will set if EGR solenoid voltage is greater than 3.5 volts when EGR solenoid is commanded off. Diagnostic runs continuously with ignition on and EGR solenoid commanded off. EGR solenoid resistance should be 7-11 ohms.
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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