P04CF

EGR Temperature Sensor C Circuit Range/Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$33–111 (est.)

Symptoms

Increased fuel consumption
Unstable engine idling
Reduced engine power
Check Engine Light Illuminates

Causes

EGR temperature sensor malfunction
Open or shorted wiring harness
Poor contact in the sensor connector
EGR valve malfunction
ECU problems (rare)

How to Fix

Check the integrity of the wiring harness to the EGR temperature sensor
Check resistance and sensor readings
Clean or replace EGR valve if necessary
Check connections and contacts in the connector
Reset error and test drive

Related codes

P0401 P0402 P0403