U0310 code meaning
Software Incompatibility With Fuel Pump Control Module
Network system Generic code U03xx codes Check engine light
What U0310 means
A fuel pump control module drives the in-tank pump at variable speed so that the pressure requested by the engine controller is reached. U0310 is set when the two controllers do not accept each other's software or calibration. No manufacturer documents U0310 publicly. GM's 2013 Cadillac ATS 2.5 L shows how tightly the pair belongs together: against a rough idle GM released matching software for the ECM and the FPCM and had both reprogrammed, each in its own session (PI1092B). Ford's 2014 code interpretation already gives the lost-contact code U0109 the MIL marker, and Roush CleanTech's propane trucks use two pump modules, A and B, so the letter in related codes matters. A mismatched pump module can deliver the wrong pressure, causing lean running, misfires or a no-start; a MIL is likely. U0410 covers invalid data.
U0310 at a glance
- Check engine lightYes, usually on
- Emissions testCan fail
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor0.5 to 2 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0310
- Hard start or no start, stalling
- Hesitation, lean running or misfire under load
- MIL and fuel pressure codes
Common causes of U0310
- Most likelyReplacement or aftermarket pump module with software for another application
- PossibleEngine controller reprogrammed, matching FPCM calibration not loaded
- Less likelyInterrupted programming of the pump module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Fuel pump moduleControl module software
What each part of U0310 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 10 | The exact fault in that area. |
What to do next
- Note U0310 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about U0310
What does U0310 mean?
U0310 means "Software Incompatibility With Fuel Pump Control Module". A fuel pump control module drives the in-tank pump at variable speed so that the pressure requested by the engine controller is reached. It is a generic code, so it means the same on every make.
Is it safe to drive with U0310?
Drive gently and only to a workshop. With U0310 the car can go into limp mode (reduced power) to protect itself.
Will U0310 fail an emissions test?
Yes, it can. U0310 is emissions-related, so most inspection programs fail a car while it is stored or while the check engine light is on.
How hard is U0310 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 2 hours of work. This is a job for a workshop.
Will U0310 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.