Power steering failure - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

repillows · 05-01-2022, 02:22 AM

My power steering quit working and is showing a current code of C1528 which is motor rotation angle sensor. This issue was mostly intermittent but has recently been happening a lot. I tried unplugging the harnesses going to the power steering ECU with no luck, and looking at live data, the rotation angle is all over the place and is showing little to no amps to the motor. The vehicle had an alignment issue with the power steering working when I bought it but then stopped. I replaced the struts, control arms, and steering rack to fix the alignment issue thinking that the power steering issue was related but it was not. Has anybody experienced this issue or has any insight as to what to do? Thanks!

Ashikabi · 05-01-2022, 09:40 AM

I've never had it quit working but I did have the angle wrong when reattaching the rack and it lit up my dash. I knew right away what the issue was cuz my steering wheel was pretty crooked. Reattached the rack and lights went away. Not sure if that anecdote will be useful to you or not

Sent from my ONEPLUS A5010 using Tapatalk

repillows · 05-01-2022, 12:26 PM

Quote:

Originally Posted by Ashikabi

I've never had it quit working but I did have the angle wrong when reattaching the rack and it lit up my dash. I knew right away what the issue was cuz my steering wheel was pretty crooked. Reattached the rack and lights went away. Not sure if that anecdote will be useful to you or not

Sent from my ONEPLUS A5010 using Tapatalk

I had that issue too when I installed my steering rack causing slip light and ABS light because of the steering angle sensor. Centered the rack and no lights for that. Only power steering light and failure

Ultramaroon · 05-03-2022, 02:51 AM

This is a purely electrical issue. I've never seen this one in particular but it boils down to one of three things.

The resolver,
The control unit,
Or one of the four wires between them.

Ok, that's six things but you get what I mean. Gun to my head, I'd start with the resolver. Moving parts, brushes, slip rings... but if that was the case, I feel like we should've heard about this before now, and more often.

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: C1528; Motor Rotation Angle Sensor Malfunction; 2013 MY FR-S [03/2012 - ]

05-01-2022, 02:22 AM	#1
repillows Member Join Date: Jul 2020 Drives: 2013 Scion Frs Location: Housotn Posts: 20 Thanks: 1 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Power steering failure My power steering quit working and is showing a current code of C1528 which is motor rotation angle sensor. This issue was mostly intermittent but has recently been happening a lot. I tried unplugging the harnesses going to the power steering ECU with no luck, and looking at live data, the rotation angle is all over the place and is showing little to no amps to the motor. The vehicle had an alignment issue with the power steering working when I bought it but then stopped. I replaced the struts, control arms, and steering rack to fix the alignment issue thinking that the power steering issue was related but it was not. Has anybody experienced this issue or has any insight as to what to do? Thanks!

05-03-2022, 02:51 AM	#4
Ultramaroon extra what? Join Date: Sep 2014 Drives: a 13 e8h frs Location: vantucky, wa Posts: 32,168 Thanks: 52,662 Thanked 36,916 Times in 19,150 Posts Mentioned: 1111 Post(s) Tagged: 9 Thread(s)	This is a purely electrical issue. I've never seen this one in particular but it boils down to one of three things. The resolver, The control unit, Or one of the four wires between them. Ok, that's six things but you get what I mean. Gun to my head, I'd start with the resolver. Moving parts, brushes, slip rings... but if that was the case, I feel like we should've heard about this before now, and more often. POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: C1528; Motor Rotation Angle Sensor Malfunction; 2013 MY FR-S [03/2012 - ] __________________ service manuals

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05-01-2022, 09:40 AM	#2
Ashikabi Senior Member Join Date: Aug 2014 Drives: 2013 FR-S Location: Northwest Iowa Posts: 7,359 Thanks: 454 Thanked 4,548 Times in 2,950 Posts Mentioned: 59 Post(s) Tagged: 5 Thread(s)	I've never had it quit working but I did have the angle wrong when reattaching the rack and it lit up my dash. I knew right away what the issue was cuz my steering wheel was pretty crooked. Reattached the rack and lights went away. Not sure if that anecdote will be useful to you or not Sent from my ONEPLUS A5010 using Tapatalk

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