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.
DTC 32, EGR Circuit Loop Error ("G" Series): Notes
During normal operation, the ECM compares EGR duty cycle signal with Manifold Absolute Pressure (MAP) signal and makes adjustments in duty cycle. If actual EGR control vacuum varies from what ECM has previously determined vacuum should be, and this variance continues for 10 seconds or more, a DTC 32 will be set and ECM will shut down EGR.
- This determines if DTC 32 can reset.
- This tests EGR solenoid electrical control circuit. Test light should flicker faintly if ECM harness and connections are okay. A faintly flickering light is a slightly pulsating glow as opposed to a bright steady glow from a continuous ground path.
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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