If the vehicle enters readiness mode, then the problem is intermittent. Then, clear the codes and take the vehicle for a test drive (if possible), until the code resets, or the PCM enters readiness mode. Write these down in case the problem is proven to be intermittent. If there are other related fuel pump or fuel pump codes stored in the vehicle, then they must be diagnosed and repaired first before attempting to address Error Code P069E.Īs with most codes, it’s important to refer with the TSB (technical service bulletin) regarding the code and its symptoms, with vehicle year, make, model and engine considered.Ī diagnostic scanner, DVOM (digital volt-ohmmeter), and a source of reliable vehicle information are required in diagnosing this code.Ĭonnect the scanner and retrieve all stored codes, including their freeze frame data. Open fuel pump control module voltage supply circuit.Bad or tripped fuel pump voltage shutoff (inertia) switch.There are multiple causes for this code, including: Other stored codes may be present as well. When Error Code P069E is stored, this means the PCM has determined a malfunction in the fuel pump control module, causing the illumination of the Check Engine light. By conducting internal controller self-tests, the PCM can monitor serial data carried over the CAN (controller area network), ensuring onboard controllers are interfacing properly. One of which is the fuel pump control module, which is included in the controllers. Most diesel propulsion systems use high-pressure pumps mounted on and driven by the engine.Įvery time the ignition is turned on (the PCM is energized), multiple controllers will initiate self-tests. Sometimes, it’s located along the fuel rail. The fuel pump provides pressurized fuel for the fuel injection system and usually placed inside the fuel tank. Usually, the fuel pump controller is integrated right into the PCM (powertrain control module, also known as ECM or engine control module in other vehicle makes), but can also be a stand-alone module.
The fuel pump control module works by supplying and regulating the voltage to the fuel pump relay and fuel pump. Specifications on the definition, troubleshooting, and repairs, of course, vary from one make and model to another. This includes vehicle models from, but not limited to, Buick, Cadillac, Chevrolet, Ford, GMC, etc.
This code is a generic trouble code, meaning it applies to all vehicles equipped with the OBD-II scanner, particularly those made since 1996 up to present.
Error Code P069E is defined as Fuel Pump Control Module Requested MIL Illumination.
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