P0B39 Possible Causes
- Faulty engine electronics coolant pump “B”
- Engine electronics coolant pump wiring harness is open or short-circuited
- Poor electrical connection in the engine electronics coolant pump circuit
What Does It Mean?
How to Fix Code P0B39
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.
P0B39 Symptoms
Possible
Engine light on (or service engine soon warning light)
P0B39 Meaning
The Engine Control Module (ECM) monitors the engine electronics coolant pump “B”. The ECM sets the OBDII code when the electronic engine coolant pump “B” does not meet factory specifications.