Sök
C0038
System
Chassis (ABS / Stability)
Scanner som krävs
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Right Rear Wheel Speed Sensor Circuit Low Input

Understand C0038, common causes, and the right TOPDON scanner to diagnose it.

RR wheel speed sensor circuit low voltage.

Vanliga symptom

  • ABS inop
  • Check engine light on some AWD models

Typiska orsaker

  • Failed RR sensor
  • Open or short in circuit
  • Rear bearing affecting gap

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 C0038 mean?
C0038 indicates right rear wheel speed sensor circuit low input. RR wheel speed sensor circuit low voltage.
Can I diagnose C0038 with a basic code reader?
C0038 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 C0038?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with C0038?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.