U0310
Software Incompatibility With Fuel Pump Control Module
Network / module software
Generic OBD-II
High
What it means
U0310 means another module has detected that the fuel pump control module is running software or a calibration that doesn't match the rest of the vehicle. It almost always appears after a module is replaced or reflashed. Because this module manages fuel delivery, a mismatch can cause hard starting, stalling, or poor running until the correct software is loaded.
High
Can I keep driving? Risky — a fuel pump module running mismatched software may not deliver fuel correctly, so the car can be hard to start, stall, or run poorly; get it corrected before relying on it.
Common symptoms
What you'll notice
- Check-engine light on with a U0310 stored, often right after a module was replaced or reflashed
- Hard starting, stalling, or a no-start in some cases
- Rough running, hesitation, or reduced power under load
- Other communication or fuel-system codes may set alongside it
Common causes
Most likely first
- Fuel pump control module was replaced with one running a different software/calibration version than the vehicle needsLikely
- Interrupted or incomplete software update (reflash) of the moduleCommon
- Wrong part fitted — module part number does not match this vehicle or trimCommon
- Module installed but never programmed/configured with the vehicle's as-built dataLess often
- Software corruption within the moduleLess often
How to diagnose & fix
Work through it in order
- Scan all modules and confirm the code targets the fuel pump control module; note its software and calibration part numbers.
- Verify the installed module is the correct part number for this VIN.
- Reprogram/reflash the module to the correct current software with an OEM-capable scan tool.
- Complete module configuration (write as-built/VIN data) after flashing.
- If a used or aftermarket module cannot be matched, fit the correct part and program it. Clear codes and confirm all modules report compatible versions.
FAQ
Quick answers
Is it safe to drive with U0310?+
Be cautious. Because this module controls fuel delivery, mismatched software can cause hard starts, stalling, or poor running. Have it reprogrammed before depending on the vehicle.
Can I just clear U0310?+
Clearing it won't help — the software versions still don't match, so the code returns. The module has to be flashed to the correct, compatible software.
Related codes
Often seen with U0310
Read & clear U0310 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX