P049F

Exhaust Pressure Control Valve B

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Unstable idling
Deteriorating fuel economy

Causes

Open or short circuit in valve wiring harness
Malfunction of the solenoid valve (solenoid)
Mechanical valve jamming
Problems with power or grounding of the circuit
Engine ECU malfunction

How to Fix

Check the wiring harness and valve connectors for damage.
Check the resistance and operation of the valve solenoid
Check the mechanical movement of the valve
Check circuit power and grounding
Replace valve or ECU if necessary

Related codes

P0401 P0402 P049E