What is P0612 fault code and what does it mean? What is the description of the Fuel Injector Control Module Relay Control Failure? How do I fix the P0612 fault code What are the causes and symptoms of the P0612 error code?
What is the P0612 Fault code? What does it signify?
A code P0612 indicates that the powertrain controller module (PCM), has detected an internal module malfunction. This fault is caused by the PCM’s fuel injector control module relay. The fuel injector module can be either separate from the PCM or integrated with the PCM in some cases. Automobile manufacturers are able to save space, time, and money in this manner. You can have the fuel injector control relay integrated into the PCM or separately. The vehicle repair manual may be required to locate the relay.
The controller runs self-tests every time the PCM or ignition is switched on. In addition to running self-tests and comparing signals from different modules, the controller also checks that they are communicating correctly. The Controller Area Network (CAN), bus is used by the internal controller to communicate with other modules. A code P0612 is triggered if the PCM detects an issue with the fuel injector control module relay.
This fault can either be detected by the PCM or any of its supporting control modules.
- – Anti-lock brake controller module (ABS).
- – Turbo control module
- – Body Control Module
- – Transmission control module
- Anti-theft control module
- – Traction control module
- – Fuel injection control module
- – Instrument cluster control module
- Distance warning control module
- – Climate control module
P0612 fault codes can be found on vehicles made by Duramax or Ford, Mini, Dodge, Subaru, Mini and Toyota.
What causes the P0612 Fault code?
Below are some reasons to set fault code P0612:
- – Defective fuel injector relay/fuse
- – Defective fuel injector control module
- – Broken, damaged, melted or corroded cables
- CAN bus harness electrical connectors problems
- – Poor power connection or loose or damaged PCM ground wire
- – Defective CAN bus
- – A PCM is not working properly or has to be reprogrammed
What are the symptoms of P0612 Malfunction Code?
These symptoms may be present in vehicles with code P0612.
- – Illumination and control of the check engine light
- Engine drivability issues
- – Low engine performance
- – Slow acceleration
- – Incorrect, irregular, harsh, delayed, or inaccurate gear changes
- – Vehicle shaking and idle speed fluctuations
- Stop Idling
- – Increased fuel consumption
- – Engine running very hard or not at all
- – Other fault codes can be set
How do I fix the P0612 fault code?
P0612 is often used to set the engine misfire, fuel injector, and exhaust codes. This can make it difficult for your mechanic to find the problem and fix it. Repair will be easier if fault codes are correctly placed in the correct order.
The following repairs may be able to resolve the P0612 fault code:
- – Replacing a damaged fuel injection relay
- – Replacing blown fuse
- Repair or replace damaged connectors or cables to the CAN bus harness
- – Reparing the ground wire and power supply that causes poor electricity
- – Replacing a faulty CAN bus
- – Replacing the fuel injector control unit that is faulty
- – Replacing/reprogramming the PCM
How serious is the P0612 fault code?
Control module problems should be treated seriously. The vehicle’s drivability can be severely affected by the P0612 fault code. It is important to fix the problem as soon as possible.
