Open Or Short Circuit In The Fuel Pump Primary Circuit
Table of contents
P0233 MAZDA Possible Causes
- Open Inertia Switch
- Blown Fuel Pump fuse
- Open Fuel Pump Monitor Circuit
- Open Fuel Pump Control Circuit
- Faulty Fuel Pump Relay
- Damaged PCM.
How do I fix code P0233 MAZDA?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P0233 MAZDA code
The cost of diagnosing the P0233 MAZDA code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
When is the code detected
The code will be set if a low voltage on the control circuit of the fuel pump relay is detected by the PCM.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0233 MAZDA Description
The powertrain control module (PCM) provides ignition positive voltage to the coil side of the fuel pump relay. When the ignition switch is first turned ON, the PCM energizes the fuel pump relay, which applies power to the fuel pump. The PCM enables the fuel pump relay as long as the engine is cranking or running, and crankshaft reference pulses are received. If no crankshaft reference pulses are received, the PCM de-energizes the fuel pump relay after 2 seconds. The PCM monitors the voltage on the fuel pump relay control circuit.