P0230
CriticalP0230 — Fuel Pump Control Circuit Malfunction
Description
What the Code Means
P0230 points to a fault in the primary fuel pump electrical circuit. On the B58 engine (B58B30M0), this code can come from a bad fuel pump relay, a blown fuse, or a failing pump itself.
The fuel delivery system includes the fuel pump, relay, fuse, and wiring. The DME controls the relay that powers the pump. When it detects a mismatch in the circuit — an open, a short, or excess resistance — the DME sets P0230.
Symptoms
Symptoms
- The engine won't start or is hard to start.
- The engine may misfire.
Causes and fixes
Diagnosis and Repair
- Check the fuel pump fuses and relay.
- Check the wiring to the fuel pump.
- Check the fuel pump itself.