P045B

EGR B Control Circuit Range/Performance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Increased fuel consumption
Unstable engine operation at idle
Reduced engine power
Check Engine Light Illuminates

Causes

EGR solenoid valve B malfunction
Dirty or clogged EGR valve B
Damage to the control circuit wiring harness
EGR valve position sensor fault B
ECU software error

How to Fix

Check the condition of the EGR valve B for contamination.
Check the integrity of the wiring harness and connections
Test EGR solenoid valve B
Check EGR valve position sensor B
If necessary, replace faulty components
Reset the error and check the system operation

Related codes

P0401 P0402 P0403 P0404