C1231 - Steering Angle Sensor

[STS-V]

Hi all,

Down to one final code - C1231; Steering Angle sensor fault. I've had the steering wheel on and off multiple times. Anyone know the correct way to fix this?

[redlined600]

Bump - Any follow up on this?
@STS-V ?

[Bobblehead]

Originally Posted by redlined600

Bump - Any follow up on this?
@STS-V ?

I don't want to be a jerk, but he got banned. I'm not sure if he'll ever see that.

[redlined600]

Originally Posted by Bobblehead

I don't want to be a jerk, but he got banned. I'm not sure if he'll ever see that.

Interesting, and is hardly call that being a jerk.

Either way, does anyone know if this code differentiates between a broken sensor and one that needs calibration or was installed incorrectly?

[the_comedian312]

Did anyone ever figure this out because my '13 BRZ is spitting out the same code.

[mike8o8]

i also have the same code left C1231 - Steering Angle Sensor
shows abs light and traction control light also
some help changed some parts lower control arm sway bar end link and wheel hub assembly

[Opie]

This code appears for several reasons;
- the steering angle calibration is out of spec, can happen anytime a suspension component is changed, steering wheel removed, and/or if an alignment is performed and they skip the recalibaration steps.
- the steering angle sensor has a fault or is damaged, if you've had the wheel off are you sure you reconnected everything?, was the clockspring reinstalled correctly?

Diagnostic code(s): C1231
DTC detecting conditions: When the voltage at +BS terminal is between 9.6 to 16.5 V, a steering sensor error signal is received.
Common Faulty parts:
• ECM IG1 fuse
• Wiring harness or connector
• Steering sensor
CAUTION:
• When the steering sensor has been removed & or replaced, make sure to perform VSC(VDC) Centering Mode Calibration procedure.
• Before performing troubleshooting, check the fuse for this circuit.

Check wiring harness and connector (steering sensor power supply)

(1) Check the steering sensor connector for poor engagement or disconnection.
Criteria : No trouble
(2) Disconnect the connector D56 for the steering sensor.
(3) Check the case and terminal of the connector for deformation and/or corrosion.
Criteria : No deformation or corrosion.

(4) Check the voltage and resistance between terminals.

Voltage
Inspection terminals: D56-4(IG) - chassis ground
Inspection conditions: IG ON
Standard value: 11 to 14 V

Resistance
Inspection terminals: D56-1(ESS) - chassis ground
Inspection conditions: Always
Standard value: Less than 1 Ω

Captions in illustration
*a = Front side of vehicle wiring harness connector (Steering sensor connector)
If NG >Repair or replacement of wiring harness or connector
If OK >Replacement of steering sensor