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C0045
System
Chassis (ABS / Stability)
Scanner som krävs
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Right Rear Wheel Speed Sensor Circuit Range/Performance

Understand C0045, common causes, and the right TOPDON scanner to diagnose it.

ABS module detected a fault in the right rear wheel speed sensor signal range. Speed sensors tell the ABS and stability control how fast each wheel is turning.

Vanliga symptom

  • ABS light on
  • Traction/stability control disabled
  • False activation of ABS
  • Speedometer erratic on some models

Typiska orsaker

  • Failed right rear wheel speed sensor
  • Damaged tone ring or exciter ring
  • Wiring in wheel well harness
  • Corrosion at sensor connector

Vilken scanner behöver du?

Full-system scanner (engine, ABS, SRS, transmission, service resets)

Använd live-data och freeze frame innan du byter delar. ABS-, SRS- och U-koder kräver oftast en fullsystems-scanner.

Diagnostiktips

  • Spara freeze frame när koden först sätts
  • Rensa koden först efter att orsaken är åtgärdad
  • Kontrollera relaterade väntande koder
  • Verifiera batterispänning över 12,4 V innan du misstänker sensorer

Rekommenderade TOPDON-scannrar

Vanliga frågor

What does C0045 mean?
C0045 indicates right rear wheel speed sensor circuit range/performance. ABS module detected a fault in the right rear wheel speed sensor signal range. Speed sensors tell the ABS and stability control how fast each wheel is turning.
Can I diagnose C0045 with a basic code reader?
C0045 may set in the engine module, but related diagnostics often benefit from an enhanced or full-system scanner with live data and freeze frame.
Which TOPDON scanner do I need for C0045?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with C0045?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.