Guide To P0612 OBD Error Code Solutions

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Is the car’s Check Engine Light illuminated? Is there a sudden drop in the power and acceleration? Are you experiencing reduced fuel economy? All these can be due to problems with the fuel injector control module relay control of the car thus leading to OBD code P0612 getting stored and flashed in the PCM.

OBD-II Code Engine may not start is defined as a Fuel Injector Control Module Relay Control

The OBD code P0612 gets stored and flashed after the PCM detects problem with the fuel injector control module relay control circuit. One of the PCM’s supporting control modules may also detect this issue. Examples would be the body control module, the transmission control module, the instrument panel control module, the turbo control module, the fuel injection control module, the anti-lock brake control module, the cruise control module, the anti-theft module, proximity alert module, the traction control module, and the climate-control module. In the event of a relay control error in the fuel injector control module, this code will be stored and a Check Engine Light will come on. However, for some models, this problem has to occur multiple times before the warning light is displayed.

What causes this problem with the Fuel Injector Control Module Relay Control?

• Bad fuel injection relay/fuse
• Malfunctioning fuel injector control module
• Electrical connection poor
• Lose control module strap or busted ground wire
• Corroded, shorted or open connectors or wiring in the CAN Bus harness
• Electrical connector corrosion/damages
• Defective CAN bus harness
• Powertrain Control Module failure

1. Diagnostic Tools - An experienced mechanic will make use of factory grade tools to diagnose an OBD problem. Buy best tools and equipment from us.
2. Powertrain Control Module - P0612 error code also relates to problems with the powertrain which is a combination of engine control module and the transmission control module. Find all the Powertrain related parts with us.
3. Fuel Injector - Faulty fuel injector will affect the fuel delivery system and thus the engine performance. Replace it now!
4. Fuel Injection Relay - Fuel injection relays, if damaged should be immediately replaced to keep a check on the performance. Buy new fuel injection relay now!
5. Fuel Injection Connector - Faulty, damaged, shorted or open connectors must be replaced as it hampers the performance immensely. Buy new injection connector now!

It is vital to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P0612 here:

Common Symptoms

• Affected fuel efficiency
• Engine Misfire codes stored
• Engine drivability issues
• Reduced engine performance
• Other stored codes

Want to correct the Trouble Code P0612? Read these points mentioned below:

• Replace or repair disconnected, damaged, corroded or shorted connectors, components and wiring
• Replace or repair the fuel injector
• Disconnecting the CAN bus pins and harness

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Here are some steps which you should follow in order to diagnose this fault code:

• Always take the help of an experienced mechanic who will visually inspecting the fuel system, searching primarily for the leak. Since the leak is considered a significant one, it should be fairly easy to locate.
• Repair or replace the part that is causing the large fuel leak, once the source of fuel leak has been found.
• Inspect for any wiring and harness issues and correct the damaged wirings.
• If there is no leakage found, check for the faulty ECU. Although, this fault is very rare but can be a reason for problematic fuel delivery system, thus hampering the engine performance. The ECU needs to be replaced in such condition and has to be reprogrammed to erase any stored faulty error.
• PCM failure and fuel injection control module failure has to be inspected and replaced if required. Always check for all the related components carefully.

Common Mistakes When Diagnosing the P0612 Code

OBD codes P0612 error are fairly easy to misdiagnose and, thus, perform an erroneous repair. One reason for this is that they’re so often accompanied by other problems. P0612 is associated with some transmission and drivability codes, engine misfire codes, fuel injector codes, lead exhaust codes and many others. As a result, a mechanic may repair those issues and assume that the ones associated with the P0612 code. Utilizing freeze frame data and addressing codes in the order in which they were stored will help a mechanic avoid this problem. It is also important to check for all the questioned components and repair or replace as required. Always follow the correct diagnostic steps properly.

P0611 - Fuel Injector Control Module Performance