U0315

Software Incompatibility With Anti-Lock Brake System (ABS) Control Module

Q: Is it safe to drive with U0315?

You can drive because normal braking still works, but ABS and stability control are likely off, so stopping distances on slippery surfaces suffer. Drive gently and get it corrected soon.

Q: Can I just clear U0315?

Clearing it won't help — the software versions still don't match, so the code returns and ABS stays disabled. The module has to be flashed to the correct, compatible software.

Network / module software Generic OBD-II Medium

What it means

U0315 means the vehicle has detected that the ABS control module is running software or a calibration that doesn't match the rest of the network. It usually appears after a module is replaced or reflashed. Normal hydraulic braking is unaffected, but a mismatch typically disables ABS, traction, and stability control until the correct software is loaded — so braking on slippery surfaces is compromised.

Medium

Can I keep driving? Drivable but with degraded safety — normal (base) braking still works, but ABS, traction, and stability control may be disabled, so brake gently and get it fixed promptly.

Real-world scan data

Seen in

166

scans in the past year

Found in

<0.1%

of scans

0.1%

of scans that found faults

Appears alongside · share of U0315 scans

U0121in 67.5% of scans

P2119in 46.4% of scans

P0657in 42.8% of scans

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

ABS warning light (and often traction/stability lights) with a U0315 stored, usually right after a module was replaced or reflashed
ABS, traction control, and stability control disabled
Base brakes still work, but without anti-lock function during hard stops
Other communication or ABS codes may set alongside it

Common causes

Most likely first

ABS 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 ABS 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 U0315?+

You can drive because normal braking still works, but ABS and stability control are likely off, so stopping distances on slippery surfaces suffer. Drive gently and get it corrected soon.

Can I just clear U0315?+

Clearing it won't help — the software versions still don't match, so the code returns and ABS stays disabled. The module has to be flashed to the correct, compatible software.

Read & clear U0315 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX