P0628

Fuel Pump "A" Control Circuit Low

DTC P0628, sometimes indicated as P062800 is an OBD diagnostic trouble code indicating a generic fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the causing fuel pump "a" control circuit low.

This code is set when the PCM detects that the fuel pump A control circuit is low. This could be caused by a defective fuel pump, a wiring issue, or a problem with the PCM.
If you are getting this code, first check the wiring and connectors for the fuel pump. Make sure they are all properly connected and that there is no damage to the wiring. If the wiring is OK, then replace the fuel pump. If the problem is with the PCM, then have it checked and repaired.

  • P0628: Fuel Pump A Control Circuit Low
  • P0628: Fuel Pump "A" Control Circuit Low
  • P0628: Fuel pump (FP) control – circuit low
  • P0628 00: Fuel pump (FP) control - circuit low

See Also: Related Error Codes
DTC Trouble Code Search
Bulletins

Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.

Consumer Complaints for this DTC


2016 MERCEDES-BENZ GLE with 64537.0 miles

I purchased my 2016 mercedes benz Gle 350 late september 2019. Since i have owned the vehicle i have had issues with water getting in through the lift gate. On saturday jan 4 this water entry through trunk caused my mercedes benz to stall while driving. Fortunately i was on a safe roadway with ample space between other drives and an accident did not occur. After towing it home i had the car diagnosed by my local mercedes benz specialist. The computer had the following stored diagnostic codes. P053f94 stored the fuel pressure during a cold start is implausible. There exists an unexpected instruction. P062800 current the output for the fuel pump has a short circuit to the ground. U010987 current and stored communication with the fuel pump module is faulty. The message is lost. These diagnostic codes led to technical service bulletin water entry through trunk reference number(s) li88.50-p-069683 version 1 date of issue: april 12, 2019 function group 88.50 trunk lid complaint trunk seal is loose, vehicle will not start, or check engine light
 cause possible improper fit of trunk seal or water entry to the fuel pump unit remedy please open a ptss case. Do not modify in anyway.
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM UNKNOWN OR OTHER ELECTRICAL SYSTEM FUEL/PROPULSION SYSTEM UNKNOWN OR OTHER

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