335 Pressure feedback EGR sensor voltage higher or lower than expected during KOEO
How to read it
Code 335 reads as 3 flashes, pause, 3 flashes, pause, 5 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.
New to flash codes? The OBD-I code reading guide walks through the paperclip method, code 12, and reading two-digit codes.
What does Ford code 335 mean?
335. Pressure feedback EGR sensor voltage higher or lower than expected during KOEO. This code sets when your vehicle computer detects pressure feedback egr sensor voltage higher or lower than expected during koeo.
Common causes of 335
- Faulty pressure feedback EGR sensor
- Carbon holding the EGR valve open or closed
- Plugged EGR pressure feedback tube or port
- Open or shorted wiring in the EGR circuit
- Faulty PCM EGR control
How to fix 335
- Confirm the code and read the flash sequence again
- Inspect the EGR valve and its passages for carbon
- Test the pressure feedback EGR sensor through its travel
- Repair a plugged tube or damaged wiring before replacing parts
- Replace the valve or sensor only after the tests