C2247

Code

Generic C — Chassis

Steering Angle Sensor Circuit Range/Performance

Brand: Generic

Type: C — Chassis

Views: UK: 11 EN: 15 RU: 12

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Faulty steering angle sensor (internal failure)
Damaged or corroded sensor connector or pins
Open, shorted, or intermittent wiring between sensor and control module
Poor ground or reference voltage to the sensor
Failed steering column control module or SAS interface
Sensor out-of-position (incorrect zero/offset) after steering repairs or battery disconnect

Symptoms

ABS, ESC, or traction control warning lamp illuminated
Stability control functions disabled or operating incorrectly
Fault stored in ABS/ESC/steering module; may prevent system self-calibration
Steering angle value shown by scanner does not match actual steering wheel position
Cruise control or lane-keeping features may be disabled or limited
Possible hesitation to enable traction control with rapid steering inputs

What to check

Read all stored and pending codes from ABS/ESC and powertrain modules; note freeze frame data
Scan live data for steering angle sensor value at center (straight-ahead) and while turning lock-to-lock
Compare steering wheel rotation to SAS output reported by the scanner
Check for related communication (U) codes on CAN bus
Visually inspect SAS connector and steering column wiring for damage or corrosion
Backprobe sensor connector and check reference, signal, and ground circuits for correct voltage and continuity

Signal parameters

Typical sensor types: analog (0–5 V) or digital/CAN output; specific values vary by vehicle
Common reference: ~2.5 V at straight-ahead for some analog designs (center voltage)
Output range typically spans the sensor's mechanical travel (examples: ±450° to ±720° total range depending on design)
Resolution can be high (hundreds to thousands of counts per revolution) for digital sensors
Expect smooth, continuous change in output as steering is turned; jumps, clipping, or flat lines indicate fault

Diagnostic algorithm

Connect a capable scan tool; record C2247 and any related codes. Note freeze frame and module network status.
With ignition on, observe live SAS value at rest and while slowly turning wheel; confirm value moves smoothly and direction matches steering motion.
Visually inspect SAS connector and wiring up the steering column for corrosion, broken wires, or chafing. Repair any damage.
Backprobe the sensor connector: verify reference voltage, ground continuity, and signal output. Compare to manufacturer spec; look for noise or intermittent loss.
Wiggle harness and connectors while observing the live signal to find intermittent faults.
Check continuity/resistance between the sensor and the ABS/ESC module pins; repair any open/short.
If electrical checks are good, attempt a SAS zero/auto-calibration per factory procedure. If calibration fails or values are out of range, suspect faulty sensor or module.
If calibration passes but fault returns, replace the steering angle sensor and retest.
After repair or replacement, clear codes, perform required calibration, and verify function with road test and scan tool monitoring.
If fault persists after sensor replacement, evaluate the steering column control module and vehicle communications (CAN) for faults.

Likely causes

Failed SAS unit
Corroded/loose connector at SAS
Intermittent wiring or chafing in harness to ABS/ESC module
SAS requires recalibration after steering work or battery disconnect

Fault status

⚠️ Status

Steering Angle Sensor Circuit Range/Performance. ABS/ESC may be disabled due to sensor output out of expected range or inconsistent readings. Sensor calibration or component repair/replacement required.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0 - 3.0 hours