P1234 BMW Possible Causes
- Faulty fuel pump relay
- Fuel pump relay harness is open or shorted
- Poor electrical connection in fuel pump relay circuit
How to Fix BMW Code P1234?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
- Engine light on (or service engine soon warning light)
P1234 BMW Meaning
Fuel Pump Relay Activation is the generic description for BMW P1234 code, but the manufacturer may have a different description for your specific model and vehicle year. Currently, we don’t have more information about the BMW P1234 OBDII code.