Ford 326 EGR temperature sensor circuit above maximum voltage (2.0L, 2.3L HSC and 3.0L SHO)

How to read it

Code 326 reads as 3 flashes, pause, 2 flashes, pause, 6 flashes on the check-engine light. Jumper the self-test input to signal return at the test connector, then run the key on engine off self test and the running self test, counting the check-engine flashes each time.

What does Ford code 326 mean?

EGR temperature sensor circuit above maximum voltage (2.0L, 2.3L HSC and 3.0L SHO)

Common causes of 326

• Hose blocked/leaking
• EGR solenoid filter
• EGR solenoid
• Wiring
• EGR valve
• Exhaust gas pressure sensor
• ECM

How to fix 326

1. Check the hose for a blockage or a leak
2. Test the EGR solenoid filter and replace it only if it fails its own test
3. Test the EGR solenoid and replace it only if it fails its own test
4. Check the circuit wiring and harness for damage, chafing or a poor splice
5. Test the EGR valve and replace it only if it fails its own test
6. Test the exhaust gas pressure sensor and replace it only if it fails its own test
7. Test the ECM last, only after every circuit test has passed
8. Clear the code, then retest to confirm the fix holds

Source

Qualified source review