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Home / DTC / U0415 — Invalid Data Received From Anti-Lock Brake System (ABS) Control Module

U0415 — Invalid Data Received From Anti-Lock Brake System (ABS) Control Module

Detailed page for trouble code U0415.

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U0415

Generic U — Network/User

Invalid Data Received From Anti-Lock Brake System (ABS) Control Module

Brand: Generic
Type: U — Network/User
Views: UK: 26 EN: 42 RU: 80
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Page language: EN

Causes

  • Faulty ABS control module
  • Intermittent or failed CAN/LIN network communication (open/short/poor termination)
  • Damaged wiring or connectors between ABS and main ECU(s)
  • Low battery voltage or poor power/ground at ABS or receiving module
  • Software mismatch or corrupted firmware in ABS or receiving module after replacement/update
  • Faulty wheel speed or brake sensors causing invalid data to be transmitted

Symptoms

  • ABS warning lamp and/or traction control/stability light illuminated
  • Reduced or disabled ABS/traction control functionality (fail-safe mode)
  • Possible drivability complaints related to traction control interventions
  • Other modules reporting U-codes or multiple network communication codes
  • Brake pedal feel may be normal (ABS is a control system)

What to check

  • Read all stored and pending codes from all modules with a capable scan tool; note freeze-frame and timestamps
  • Confirm ABS module presence and module IDs/software levels via scan tool
  • Inspect wiring and connectors at ABS module and at major junctions for corrosion, damage, or looseness
  • Check battery voltage and charging system; ensure stable supply (12.6V+ at key off, >13.5V charging)
  • Verify main chassis and ABS module grounds are clean and tight
  • Scan for other network codes (U0100, U0121, U0073, U0155 etc.) to identify broader bus issues

Signal parameters

  • CAN bus idle voltages: CAN_H ≈ 2.5V, CAN_L ≈ 2.5V (differential ~0V); dominant state drives CAN_H ~3.5V, CAN_L ~1.5V
  • Typical bus termination: two 120 Ω resistors in parallel → ~60 Ω across CAN_H–CAN_L
  • ABS-related message IDs and update rates vary by vehicle; wheel speed messages commonly update at tens to hundreds of Hz depending on speed
  • Look for excessive error frames, malformed frames, or missing expected messages from the ABS module

Diagnostic algorithm

  1. Capture all DTCs from every networked module; record when U0415 was set and any related codes.
  2. Clear codes and perform a stationary retest; if code returns immediately or only under certain conditions, note pattern.
  3. Visually inspect ABS connectors, harness, and grounds; repair any corrosion or damage.
  4. Verify vehicle battery and charging voltages; correct if low/unstable.
  5. With ignition ON, measure CAN_H and CAN_L at the ABS connector and at the main ECU; compare to expected idle voltages and look for large deviations or noise with a scope.
  6. Check bus termination resistance across CAN_H–CAN_L (engine off); near 60 Ω expected. Replace missing terminator if out of spec.
  7. Use a scan tool or CAN sniffer to confirm whether ABS is transmitting valid messages (IDs, data length, plausible wheel speed values).
  8. If ABS messages absent or corrupted, disconnect ABS module and observe whether the rest of the network returns to normal (helps isolate module-induced bus faults).
  9. Check wheel speed sensors and related circuits only if ABS messages indicate invalid sensor data.
  10. If wiring and sensors are good but ABS module remains nonfunctional or sends invalid messages, verify software/calibration levels and reflashing/reprogramming options with OEM tool; replace module only after exhausting COMM/wiring and software resolution steps.
  11. After repairs, clear codes, perform relearns/calibrations required by manufacturer, and test drive to confirm repair.

Likely causes

  • Corroded/loose connector at ABS module or main ECU
  • CAN bus wiring short to battery or ground or open circuit
  • Bad ground at ABS module or chassis ground point
  • ABS module hardware failure
  • Module software/firmware incompatibility after service or replacement

Fault status

⚠️ Status
Invalid or implausible data received from the ABS control module over the vehicle network. Could indicate communication errors, corrupted messages, wiring/connectivity issues, or ABS module malfunction/software mismatch.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1-3 hours

Similar codes

U0121 U0100 U0073 U0155 C0035
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