P04D1

EGR Temperature Sensor C Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$11–56 (est.)

Symptoms

Unstable engine operation at idle
Power reduction
Increased fuel consumption
Check Engine light comes on

Causes

EGR temperature sensor malfunction
Open or shorted wiring harness
Problems with sensor connectors
EGR valve malfunction

How to Fix

Check the integrity of the wiring harness and sensor connectors
Measure the resistance of the EGR temperature sensor
Check the operation of the EGR valve
If necessary, replace the EGR temperature sensor

Related codes

P0401 P0402 P0404