P2BF9

Exhaust Flow Control Valve B Control Circuit Low

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$33–89 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased fuel consumption
Unstable engine operation
Increased noise level of the exhaust system

Causes

Open or short circuit in control circuit
Exhaust flow control valve B malfunction
Wiring Harness Problems
Engine control unit malfunction
Poor contact in connectors

How to Fix

Check the integrity of the control circuit
Check valve resistance
Inspect the wiring harness for damage
Check contacts in connectors
If necessary, replace exhaust gas flow control valve B

Related codes

P2BFA P2BF8 P2BF7