What does C1235 mean on a Ford?

C1235. Wheel Speed RR Input Signal Missing. Applies to Escape, Fusion, Focus, Taurus, Explorer.

What causes C1235 on a Ford?

Dead right rear wheel speed sensor Severed RR sensor wire Missing tone ring teeth Sensor backed out of its mount ABS module input fault

How do I fix C1235 on a Ford?

Confirm zero RR speed while others read Inspect sensor mounting and air gap Test wiring continuity end to end Examine the tone ring Replace the sensor per findings

Code

C1235

Wheel Speed RR Input Signal Missing

Category: Chassis
Severity: ABS Light
Applies to: Escape, Fusion, Focus, Taurus, Explorer
Related: No single generic twin. See OBD Codes List

Findings, check these first

Dead right rear wheel speed sensor
Severed RR sensor wire
Missing tone ring teeth
Sensor backed out of its mount
ABS module input fault

Standard procedure

Confirm zero RR speed while others read
Inspect sensor mounting and air gap
Test wiring continuity end to end
Examine the tone ring
Replace the sensor per findings

Code lookup

Type a code above, or start from a symptom or a common code.

Press / to jump to the box. Ford-enhanced powertrain, body, chassis and network codes. Generic P0xxx codes live on OBD Codes List.

Sources and review

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Last updated 2026-09-25.

Report a correction for C1235. Include your vehicle, the issue and a source if you have one.

This fault is part of the Ford ABS and traction control codes guide. It covers the family and the order to check it.