P0B3A Possible Causes
- Faulty engine electronics coolant pump “B”
- Engine electronics coolant pump wiring harness is open or shorted
- Poor electrical connection in engine electronics coolant pump circuit
What Does It Mean?
How to Fix Code P0B3A
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.
P0B3A Possible Symptoms
Check engine light illuminated (or service engine soon warning light)
P0B3A Meaning
The engine control module (ECM) monitors the engine electronics coolant pump “B”. The ECM sets the OBDII code when the engine electronics coolant pump “B” does not meet factory specifications.