CAN network

U0415 — Invalid Data Received from ABS Control Module

Severity: medium Drive with care, to a shop

What U0415 means

U0415 means a control module (such as the engine or power steering module) received data from the ABS module that failed its validity checks. Modules share information like wheel speeds over the CAN bus. If a message is corrupted, out of range, or the ABS module itself is malfunctioning, this code is stored.

Symptoms

  • ABS warning light on
  • Traction control or ESC light on
  • Check engine light may come on
  • ABS function reduced or unavailable
  • Longer stopping distance on low-traction surfaces
  • Several warning lights at once
  • C-codes often stored as well

Possible causes

  1. Faulty ABS module or internal fault
  2. Damaged, corroded or loose wiring and connectors at the ABS module
  3. Faulty wheel speed sensor sending bad data
  4. Unstable system voltage from a weak battery or charging problem
  5. CAN bus open, short, chafed harness or interference
  6. Poor ground or missing power at the ABS module
  7. Another faulty module loading the bus

How to diagnose

  1. Test battery and charging system voltage and correct any dips
  2. Scan all modules and note which ones don't respond and any C-codes
  3. Compare the four wheel speed readings in live data
  4. Inspect ABS module and wheel sensor connectors and harness for corrosion, chafing and moisture
  5. Check power supply and grounds at the ABS module
  6. Measure CAN bus resistance at the diagnostic connector (typically about 60 ohms) and line voltages
  7. Test wheel speed sensors and their wiring
  8. Unplug suspect modules one at a time only per a documented procedure

Common fixes

  • Repair or replace damaged wiring and connectors
  • Replace a faulty wheel speed sensor
  • Restore power and ground, and fix the battery or alternator if needed
  • Repair or replace the ABS module, with programming if required
  • Fix the CAN bus fault or the module disturbing the bus

U0415 on different brands

Ford · manuals
On the Ford Explorer, a U0415:00 code is set by the power steering control module (PSCM) when it receives invalid data from the ABS module; this applies to the documented controller and model years.

Questions and answers

Can I drive with U0415?

Usually yes, carefully and not for long. The base brakes normally work, but ABS and stability control may be off, so leave extra following distance on wet or slippery roads.

What most often causes U0415?

Most often it's wiring or connector trouble at the ABS module, low system voltage, or the ABS module itself. Start by checking the battery, the harness and scanning every module.

Do I need to replace the ABS module?

Not right away. Rule out power, ground, the CAN bus and wheel speed sensors first. Replace the module only after those checks come back good.

This is general information about the code. The meaning can differ between makes and models: a scan tool and the repair manual for your car will show the exact cause.