Data Link Communication Error - Steering Angle Sensor
Indicates a problem with the communication between the steering angle sensor and the ECU.
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 steering angle sensor is supposed to send position data to the computer. If there's a communication issue, the computer can't see how much you're turning the steering wheel.
What the computer is actually seeing
The ECU is receiving no valid steering angle information from the sensor over the CAN bus; this could show as a loss of voltage or inconsistent data.
What a healthy reading looks like
Steering angle sensor output should show a consistent voltage between 0.5V (centered) and 4.5V (full lock) depending on wheel position.
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.
- 11. Inspect wiring and connectors for any visible damage or corrosion. Check for proper connections to the steering angle sensor.
- 22. Verify the steering angle sensor's output voltage with a multimeter while turning the steering wheel. Expected values are between 0.5V and 4.5V.
- 33. If output voltage is unstable or absent, replace the steering angle sensor and retest.
- 44. If the sensor outputs correctly but the code persists, check communication on the CAN bus with a scan tool. Look for data inconsistencies alongside other modules.
- 55. If communication issues exist, trace the CAN bus wiring, checking for continuity and any shorts to ground or power.
Common causes
- Faulty steering angle sensor
- Wiring or connector issues in the sensor circuit
- Faulty Steering Control Module (SCM)
- Software glitches in the ECU
Typical repair cost
$$
Related codes
Frequently asked questions
Is it safe to drive with this code active?
It's not recommended to drive if steering responsiveness seems affected; seek repairs.
Will this code come back after clearing it?
Yes, if the underlying issue isn't fixed, the code will likely reappear.
Why does this code pair with other steering sensor codes?
Faulty steering angle sensor messages can trigger multiple related codes due to communication failures.
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