P2B98

Exhaust Pressure Control Valve A Supply Low

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 operation at idle
Increased noise level of the exhaust system

Causes

Open or short circuit in valve control circuit
Malfunction of the exhaust gas pressure control valve
Problems with the wiring harness or connectors
Engine control unit (ECU) malfunction
Corrosion or oxidation of contacts

How to Fix

Check valve control circuit integrity
Check valve resistance and operation
Inspect the wiring harness and connectors for damage.
Check voltage at valve connectors
If necessary, replace the exhaust gas pressure control valve

Related codes

P2B99 P2B97 P2B96