P0B12 Possible Causes
- Faulty hybrid battery
- Hybrid battery harness is open or shorted
- Poor electrical connection in hybrid battery circuit
What Does It Mean?
How to Fix Code P0B12
Check the “Possible Causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
P0B12 Possible Symptoms
Check engine light on (or service engine soon warning light)
P0B12 Meaning
The Engine Control Module (ECM) monitors the hybrid battery pack “B” current sensor circuit. The ECM sets the OBDII code when the signal from the hybrid battery module “B” current sensor circuit is outside factory specifications.