Code result
P2A89
Alternative Fuel Pump C Compression Stroke Valve Control Circuit Low
High severity
What it means
The control circuit of the compression stroke valve in alternative fuel pump C reports a control circuit low condition. Pump compression stroke cannot be commanded as expected.
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
Control wire shorted to ground
highOne of the most commonly reported causes for this code — check this first.
Internal short in valve coil
mediumA plausible cause — test and verify before replacing parts.
Connector pins corroded - high contact resistance
lowLess common, but worth ruling out after the more likely causes.
Related help
Get the full diagnosis
Add your vehicle and see step-by-step repair help, recalls, and TSBs in Wrenchify.
Diagnose P2A89 freeNo credit card required