P040E

EGR Temperature Sensor A Circuit Intermittent/Erratic

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

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

Causes

Open or short circuit in wiring harness
Poor contact in sensor connectors
EGR temperature sensor malfunction
Problems with the ECU

How to Fix

Check the integrity of the wiring harness and connectors
Test the EGR temperature sensor
Replace sensor if necessary
Clean or replace connectors if corroded

Related codes

P0401 P0402 P0403