OBD Guide
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C1148

Speed Wheel Sensor RF Coherency Fault

C1148 is an OBD-II diagnostic trouble code meaning: Speed Wheel Sensor RF Coherency Fault. Common causes: wheel speed sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • ABS/ESP indicator is on
  • Unstable ABS operation
  • Lost speed data on dashboard

Causes

  • Wheel speed sensor malfunction
  • Open or short circuit in the sensor circuit
  • Damage to the gear rotor (comb)
  • Problems with the ABS module
  • Contact corrosion

How to Fix

  1. Check the integrity of the sensor and its wiring
  2. Clean sensor contacts
  3. Check the condition of the gear rotor
  4. Check sensor resistance (must meet specification)
  5. Replace sensor if necessary

Related codes

C1145C1146C1147C1149

FAQ

What does the C1148 code mean?

C1148 is an OBD-II diagnostic trouble code that indicates: Speed Wheel Sensor RF Coherency Fault

What causes a C1148 error code?

The most common causes of C1148 include: Wheel speed sensor malfunction; Open or short circuit in the sensor circuit; Damage to the gear rotor (comb); Problems with the ABS module.

How do I fix a C1148 diagnostic trouble code?

To fix C1148: Check the integrity of the sensor and its wiring. Clean sensor contacts. Check the condition of the gear rotor. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with C1148?

Limited driving only, diagnose soon

How much does it cost to fix C1148?

The estimated repair cost for C1148 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat