EGR Temperature Sensor C Circuit

Common symptoms

What you'll notice

• Inspect and clean the EGR temperature sensor connector and wiring to ensure proper connection and eliminate any possible electrical issues.
• Replace the EGR temperature sensor if it is faulty or malfunctioning, as this can cause inaccurate readings and trigger the error code.
• Check the EGR valve for proper operation and clean or replace it if necessary, as a malfunctioning EGR valve can affect the EGR temperature sensor readings.
• Clean the EGR system, including the EGR passageways and intake manifold, to remove any carbon buildup or debris that may be affecting the EGR temperature sensor functionality.
• Check and repair any vacuum leaks in the EGR system, as these can cause improper operation and trigger the error code.

Common causes

Most likely first

1. Faulty EGR temperature sensor
2. Wiring or connector issue with the EGR temperature sensor
3. Problem with the EGR valve
4. EGR system clogged or blocked
5. Malfunctioning ECM (Engine Control Module)

How to diagnose & fix

Work through it in order

1. Engine misfire or hesitation
2. Poor fuel efficiency
3. Rough idle or stalling
4. Check Engine Light (CEL) illuminated
5. Loss of power or acceleration