C2357

Code

Generic C — Chassis

Steering Angle Sensor Circuit Low Voltage

Brand: Generic

Type: C — Chassis

Views: UK: 13 EN: 45 RU: 15

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Low or missing sensor supply voltage (bad 5 V reference)
Short to ground in the signal or supply wiring
Poor or corroded connector or pin contact at the sensor or ECU
Faulty steering angle sensor (internal failure)
Poor ground connection at sensor or ECU
Battery or charging system voltage significantly low during operation

Symptoms

ABS, ESC, traction control or steering warning light illuminated
Loss or reduced operation of stability/traction control systems
Inability to calibrate or initialize steering angle sensor
Stored DTC(s) for steering angle or chassis stability sensors
Possible limp or reduced performance modes on some vehicles

What to check

Retrieve all stored and pending fault codes and freeze-frame data with a scan tool
Check battery voltage and charging system (should be ~12.6 V at rest, ~13.5–14.8 V with engine running)
Visually inspect sensor connector, pins, and wiring for corrosion, damage, or pins pushed out
Back-probe sensor connector and measure supply, signal and ground voltages with ignition ON and engine as required
Check continuity from sensor ground to chassis ground and to ECU ground reference
Wiggle test wiring while monitoring live sensor voltage to find intermittent faults

Signal parameters

Typical reference supply: 5.0 V ± 0.5 V (verify vehicle-specific value)
Typical signal output: centered near ~2.5 V at steering centered position for analog potentiometer sensors
Low-voltage condition often defined as signal or supply below ~0.8–1.0 V (vehicle-specific thresholds vary)
Signal may be digital (serial/CAN/SPI) on some vehicles — low voltage may present as loss of communication
Normal ground continuity: near 0 Ω to chassis ground (small milliohm resistance); expect

Diagnostic algorithm

Connect scan tool, read and record C2357 plus any associated codes and freeze-frame data.
Verify battery and charging system are within spec. Recharge or replace battery if low.
Perform a visual inspection of the steering column area harness, sensor connector and chassis grounds; repair any obvious damage.
Back-probe the sensor connector with ignition ON (engine off unless specified). Measure reference supply, signal, and ground voltages. Compare to expected values.
If supply voltage is low or missing: trace back wiring to fuse/ECU, check related fuses, and repair short/open.
If signal is low while supply is correct: check for short to ground on the signal wire by disconnecting sensor and measuring wire-to-chassis continuity; inspect for wiring chafe.
If wiring and connectors are good, swap or bench-test the sensor if a known-good unit is available, or measure sensor resistance/patterns per service manual.
Repair or replace faulty wiring, connectors, or sensor as required. Apply corrosion protection and secure harness routing away from moving parts.
After repairs, clear codes and perform steering angle sensor calibration/initialization with an appropriate scan tool per manufacturer procedure.
Road test to verify fault does not return and stability/ABS systems operate normally.

Likely causes

Corroded/loose connector or pin at the steering angle sensor
Damaged wiring harness shorted to chassis (ground) on the sensor signal or 5 V feed
Failed steering angle sensor electronics
Blown fuse or weak battery/charging reducing reference voltage

Fault status

⚠️ Status

Steering Angle Sensor circuit voltage below expected range. Possible faulty sensor, short to ground, poor supply or ground connection, or ECU input issue. Verify supply, signal and grounds before replacing components.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2 hours