Code 32, EGR Circuit Error - "P" Series With Linear EGR: Notes

Control module controls linear EGR valve using a pulse width modulated signal. Proper operation of EGR valve is determined using 2 separate diagnostic tests. A properly operating EGR system will directly affect fuel integrator counts. With EGR activated, integrator counts will be less than without EGR operation. If monitored integrator counts do not change with EGR commanded, Code 32 will set. Linear EGR valve also incorporates an EGR pintle position sensor. If actual (feedback) pintle position signal does not match desired pintle position, Code 32 will set.

1. Checks status of EGR pintle.
2. Checks for correct operation of linear EGR valve.
3. Checks linear EGR control circuit.
4. Checks power feed to EGR valve connector.
5. Checks EGR control circuit connections and control module.
6. Checks pintle position signal circuit and control module.
7. Checks ground circuit for pintle position sensor and control module.
8. Checks for a grounded EGR control circuit.
9. Checks sensor ground circuit, 5-volt reference circuit and control module.
10. Checks sensor signal and circuit.
11. Checks control module connections, pintle position signal circuit, EGR valve connections, EGR valve and control module.