P045C

EGR B Control 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 in wiring harness
EGR solenoid malfunction
Dirty or stuck EGR valve
Problems with the engine control unit (ECU)

How to Fix

Check the integrity of the wiring harness and connectors
Check the resistance and performance of the EGR solenoid
Clean or replace EGR valve
Check and, if necessary, replace the engine control unit (ECU)

Related codes

P0401 P0402 P0403