Code 32 - Exhaust Gas RECIRCULATION (EGR) Circuit: Notes

ECM controls a solenoid that regulates vacuum to the EGR valve. EGR control solenoid is cycled by ECM grounding White/Green wire. ECM calculates EGR control solenoid duty cycle using information from CTS and TPS. EGR control solenoid is energized when diagnostic terminal is grounded.

1. With engine at normal operating temperature, Code 32 will set if the difference of EGR gas temperature between EGR on and EGR off is less than 45°F (7°C) or if signal voltage indicates an EGR gas temperature greater than 662°F (350°C) or less than -33°F (-36°C).
2. Determines if problem is with EGR valve, EGR gas temperature sensor, ECM or wiring.