P28FA

Exhaust Pressure Too Low Bank 2

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased fuel consumption
Unusual noises from the exhaust system
Rough engine operation

Causes

Exhaust system leak (bank 2)
Malfunction of the exhaust gas pressure sensor
Problems with the turbocharger (if installed)
Clogged or damaged catalytic converter
Open or short circuit in the pressure sensor circuit

How to Fix

Check the tightness of the exhaust system of bank 2
Check the condition and connection of the exhaust gas pressure sensor
Test the exhaust gas pressure sensor
Check the condition of the catalytic converter
Check the integrity of the wiring harness to the pressure sensor

Related codes

P28FB P28F9 P0491