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.
Code 32, EGR System Failure (2.8L Engine)
Code 32 means that the EGR diagnostic switch was closed during start-up or that the switch was not detected closed under the following conditions: Coolant temperature greater than 80°C (176°F), EGR duty cycle commanded by the ECM is greater than 55 percent and TPS at less than half throttle, but not idle. All conditions must be met for about 5 minutes.
- If the first step caused Code 32 to set, then the ECM has recognized a closed vacuum switch on start-up. This test will determine whether the EGR control valve, the wiring or the ECM is the cause.
- With the ignition on, the solenoid should not be energized and vacuum should not pass to the EGR valve.
- To this point the EGR solenoid and valve are OK and the following check will check the diagnostic vacuum portion of the system.
- The diagnostic switch should close at about 2" of vacuum. With vacuum applied, the switch should close and resistance go to near zero ohms. The switch should also hold vacuum or it is defective.
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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.