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 Error: Notes
PCM operates the normally-opened solenoid to control the EGR valve. By providing a ground path, the PCM energizes the solenoid allowing vacuum to pass to the EGR valve. During normal operation, the PCM compares EGR duty cycle signal with EGR control pressure/BARO signal and makes adjustments in duty cycle accordingly. If there is a difference in the PCM command and what is sensed by the EGR control pressure/BARO sensor, PCM makes minor adjustments to correct. DTC 32 will set when:
- RPM is greater than 506.
- No DTC 31 0r 33 is stored.
- 50 kPa difference between desired EGR and EGR pressure for 25.5 seconds.
PCM will default to shut down the EGR.
- This step determines if DTC 32 is the result of a hard failure or an intermittent condition.
- This step checks vacuum at EGR vent solenoid.
- This step checks the EGR valve.
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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.