ABS Sensor Input Signal Error
There’s an issue with the ABS wheel speed sensor reading.
Heads up: this code wasn't in our hand-written library yet, so DiagCoach AI built this page on the fly. Double-check critical specs against service info before condemning parts.
What it means (plain English)
The ABS system is reading the speed signal from a wheel sensor incorrectly, which can lead to improper ABS operation.
What the computer is actually seeing
The ABS control module monitors the wheel speed sensors. If one of the readings is inconsistent or absent, it triggers this fault code.
What a healthy reading looks like
Wheel speed sensors should output a voltage between 0.5V to 2.5V while moving; expected frequencies can range from 0 to 15 Hz at a standstill, depending on vehicle speed.
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 1Inspect wiring and connectors at the ABS sensor for damage, corrosion, or loose connections. Repair as needed. Decision: is wiring okay?
- 2Check the wheel speed sensor's resistance with a multimeter. Expected range is 1,000 to 2,000 ohms. Decision: does sensor test within range?
- 3Test the sensor output while the wheel is rotated (should see a varying voltage signal). Decision: is there an output?
- 4If the sensor and wiring are good, scan for other related fault codes that might indicate a failure in the ABS control module.
Common causes
- Open or shorted wiring to the ABS wheel speed sensor
- Bad ABS wheel speed sensor
- Contamination or damage to the sensor or reluctor ring
- Faulty ABS control module
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
It's moderate severity; ABS may not work properly, so it's best to fix soon but not immediately dangerous.
Why does this code appear with other ABS codes?
These codes often relate to the same wheel sensor or system, indicating a common failure point.
What if the issue comes back after repairs?
Revisit your wiring and sensor connections; intermittent failures might reoccur due to poor connections.
Working a real vehicle right now?
Let DiagCoach walk you through it live with your specific symptoms, vehicle, and what you've already checked.
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