P2B99

Exhaust Pressure Control Valve A Driver Current/Temperature Too High

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
Unusual noises from the exhaust system
Problems with turbine operation (if installed)

Causes

Malfunction of the exhaust gas pressure control valve
Problems in the control circuit (open or short circuit)
Engine control unit malfunction
Mechanical valve sticking
Damage to wiring or connectors

How to Fix

Check the condition of the EPCV valve and its mechanical operation
Check the control circuit for opens and short circuits
Check connectors and connections for oxidation and damage
Check the functionality of the engine control unit
If necessary, replace the EPCV valve

Related codes

P2B98 P2B9A P2B9B