P2AA6

EGR Cooler Bypass Control Circuit Driver Current/Temperature Too High Bank 2

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–67 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased fuel consumption
Unstable engine operation at idle
Increased emissions of harmful substances

Causes

Short circuit in EGR cooler bypass control circuit
Bypass solenoid valve malfunction
Wiring harness damage
Problems with the engine control unit
Mechanical sticking of the bypass valve

How to Fix

Check the integrity of the wiring harness and connectors
Measure the resistance of the bypass solenoid valve
Check the operation of the bypass valve on the bench
Scan the control unit for related errors
Replace solenoid valve or wiring harness if necessary

Related codes

P2AA5 P2AA7 P0401