Code result
P2AA6
EGR Cooler Bypass Control Circuit Driver Current/Temperature Too High Bank 2
High severity
What it means
The output driver for the EGR cooler bypass actuator on bank 2 reports current or junction temperature above its protection threshold. Stalled actuator or short to ground.
Is it safe to drive?
No — stop driving
This code can put the vehicle into limp or reduced-power mode. Avoid extended driving and have the vehicle diagnosed promptly.
Most likely causes
Bypass actuator mechanically jammed
highOne of the most commonly reported causes for this code — check this first.
Control wire shorted to ground
mediumA plausible cause — test and verify before replacing parts.
Related help
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