Code result
P2247
O2 Sensor Reference Voltage Circuit
High severity
What it means
Bank 2 counterpart of P2243. Reference voltage on the bank 2 sensor 1 wide-band probe is missing or out of tolerance.
Is it safe to drive?
No — stop driving
This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly.
Most likely causes
Reference voltage line open on bank 2
highOne of the most commonly reported causes for this code — check this first.
Bank 2 wide-band sensor failed
mediumA plausible cause — test and verify before replacing parts.
Related help
Get the full diagnosis
Add your vehicle and see step-by-step repair help, recalls, and TSBs in Wrenchify.
Diagnose P2247 freeNo credit card required