C0460: Steering angle sensor signal invalid or not calibrated
Steering position sensor / steering wheel angle sensor
Severity: Inspect soon
Saab service information (GM-based) says stability control and hill start assist are disabled for the ignition cycle; GM guidance shows some cases are a recalibration after battery work.
C0460 in short
C0460 means the computer received an invalid or uncalibrated steering angle signal, so stability control is switched off. On GM cars it often sets after the battery is disconnected and clears after the wheel is turned lock to lock. If it returns, the sensor, its wiring or a module needs a shop check.
The steering angle sensor tells the stability control system where the wheel points. If the signal is badly formed or the sensor has lost its learned centre position, the computer stores C0460.
Saab service information (GM-based) says the brake control module disables stability control and hill start assist for that ignition cycle and lights the indicator. A GM service note on the Buick Envision says the code can set after the battery is disconnected because the learned value is lost; the power steering control module re-zeroes the sensor after the wheel is turned lock to lock with the engine running, or after a straight drive.
Some GM trucks pair this code with a loss of power steering assist, which is a separate, more urgent fault on that vehicle.
Most likely causes
These are general causes for this code across vehicles. None is specific to one make or model.
Cause 1: Steering angle sensor lost its centre position
Common general cause- Why it ranks here
- GM guidance for the Buick Envision names battery disconnection as a cause and gives a lock-to-lock or straight-drive relearn as the fix.
- What would change this
- Rises if the code appeared right after battery or steering work. Falls if it returns after the relearn.
Cause 2: Steering angle sensor, its wiring or its power and ground
Common general cause- Why it ranks here
- Saab's tests are the sensor reading across -550 to +550 degrees, a 12 V reference and a ground under 5 ohms, with the sensor replaced if those fail.
- What would change this
- Rises if the angle reading is missing or jumps as the wheel turns. Falls if readings track the wheel smoothly.
Cause 3: Brake or power steering control module
Possible — needs testing- Why it ranks here
- Saab lists the brake module as the last item if the sensor circuits test normal.
- What would change this
- Rises if the sensor and circuits pass and the code returns. Falls if a relearn or sensor fix clears it.
What to test first
Start at step 1. Each result tells you what it means and where to go next.
Step 1: After any battery or steering work, have the steering angle relearned: turn the wheel lock to lock with the engine running, or drive straight for a short way, then clear the code.
Warning:Only do this in a safe, open area. If the Service Power Steering message shows or the steering is heavy, do not drive; have it towed.
IfThe code does not return
It meansThe sensor had lost its centre position.
IfThe code returns
It meansCheck the sensor signal and circuits.
Step 2: With a scan tool, watch the steering angle reading as the wheel is turned and check the sensor's reference voltage and ground.
Warning:The sensor sits in the airbag clock spring and steering column. Work there needs the airbag system disabled by a shop.
IfThe reading is missing or erratic, or the reference or ground is out of range
It meansSensor or wiring fault.
Points to: Steering angle sensor, its wiring or its power and ground
IfReadings are normal
It meansA control module is suspect.
Symptoms
- Stability control or traction control light on
- Service Power Steering message or heavy steering, on some GM models Gets more serious: stop and have it checked.
How to fix
This is a safety-critical system, so we explain the code but don't give repair steps. Have it inspected by a qualified technician.
Parts and cost context
- Power steering control module:On some GM models the angle sensor works with the power steering module. Labor varies; get a quote.
Labor varies by vehicle and shop; get a quote before you approve a repair.
Compare used part prices on PartPriceGuideOn your vehicle
We don't have reviewed vehicle-specific evidence for C0460 yet. The causes and tests above apply across vehicles.
Related codes
No curated relationships for C0460 yet.
C0460 questions
Why did C0460 appear after a battery change?
A GM service note says disconnecting the battery can wipe the learned steering centre. A lock-to-lock turn or straight drive lets the module re-learn it.
Sources and review
- Last reviewed
- Written by
- Saurabh K.
- Editorial review
- Pending
- Technician review
- Technician review pending
This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error