P041C

EGR Temperature Sensor B Circuit Low

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 of EGR temperature sensor (B)
Poor contact in sensor or ECU connectors
Malfunction of the EGR temperature sensor itself (B)
Problems with the wiring harness (chafing, corrosion)

How to Fix

Check the integrity of the sensor circuit (resistance, voltage)
Inspect the connectors and clean the contacts
Replace EGR temperature sensor (B) if necessary
Check wiring harness for damage

Related codes

P0401 P0402 P0403 P0404