P2D1B

Exhaust Flow Control Valve C Position Not Learned

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$33–167 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased fuel consumption
Unstable engine idling
Problems with the EGR system

Causes

Exhaust gas flow control valve malfunction
Open or short circuit in valve control circuit
Problems with the wiring harness or connectors
Sticking or mechanical damage to the valve
Engine ECU malfunction

How to Fix

Check the condition of the exhaust gas flow control valve
Check electrical connections and integrity of wires
Perform valve position learning procedure using diagnostic equipment
Replace valve if necessary
Check the operation of the engine ECU

Related codes

P2D1A P2D1C P2D1D