Diagnostic Aids

The Code 32 chart is a functional check of the EGR system. If the EGR system works properly and a Code 32 is set, check for other causes for an increased open throttle block learn value.

• Check for a blocked/restricted EGR passage.
• Check the MAP sensor function. A MAP sensor may shift enough in calibration to affect the air/fuel mixture without setting a MAP-related code.

Fig 1: Code 32, EGR System Schematic

Fig 2: Code 32, EGR System Error Flow Chart