#11 ford expedition fuel pump location code
On most applications, code P0627 sets, and a warning light is illuminated immediately after the fault occurs although in some cases, the code will only set after the fault has been present for a number of seconds. OBD II code P0627 is a generic code that is most commonly defined as “Fuel Pump “A” Control Circuit – Open” (which definition applies to most gasoline applications), and is set when the PCM detects an open voltage in the fuel pump control circuit. Therefore, every attempt MUST be made to confirm the definition of P0627 as it relates to the application being worked on to prevent confusion, misdiagnoses, and the unnecessary replacement of expensive parts and components.įrom the above, it should be obvious that this guide cannot provide detailed diagnostic/repair information that will be valid for all applications under all possible conditions, which means that the generic information provided here is intended for general informational purposes only, and it must therefore NOT be used in any diagnostic procedure for code P0627 without making proper reference to the application being worked on. Note however that other definitions are possible, depending on the make and model of the application involved, as well as the production year of the affected application.
“Open Circuit Detected at the Fuel Lift Pump”.“Fuel Pump Relay Control Circuit Malfunction”.“Fuel Pump Relay Control Circuit Malfunction Conditions”.“Fuel Pump “A” Control Circuit – Open” (most common, and applies to most gasoline applications).Some (common) possible definitions of P0627 could include the following. On diesel applications, a lift pump is placed inside the fuel tank, or sometimes closer to the main injection pump to ensure a constant supply of low-pressure fuel to the main injection pump. On diesel applications, this code refers to an open fuel lift pump control circuit voltage. This is particularly true when code P0627 is present on a gasoline application that uses a return-less fuel system, as opposed to a constant pressure system that bleeds off fuel pressure with a pressure regulator. Also, take note that this guide will discuss code P0627 with the definition “Fuel Pump “A” Control Circuit – Open”, since this definition applies to most gasoline applications.Īlthough all definitions of P0627 apply to open fuel pump control circuit voltages in some way, the testing procedures for this code vary greatly between diesel and gasoline applications. SPECIAL NOTES: OBD II code P0627 is among the most ambiguous of codes, in the sense that it has many possible definitions- some of which apply to gasoline applications and others that apply to diesel applications.
#11 ford expedition fuel pump location pro
We recommend Torque Pro What Does Code P0627 Mean? If the noise is from the fuel pump, failure of the pump is often imminent and you should replace the fuel pump at your earliest convenience.By Reinier ( Contact Me) Last Updated Automobile Repair Shop Owner Codeįuel pump control -circuit open (Buy Part On Amazon) As a fuel pump fails, you may notice a whirring or humming noise coming from the fuel tank area, toward the rear of the car. The lack of fuel may result in the engine operating without enough fuel relative to the amount of air, causing the check engine light to appear. Sometimes a fuel pump will fail slowly, and that means the fuel pressure and volume slowly degrades. A failed fuel pump may prevent a car from starting or stall it.
However, as with any electro-mechanical component, a fuel pump will eventually degrade and fail. When to consider replacing the fuel pump?Ī high quality, OEM fuel pump can last indefinitely.
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