Just noticed I have this same problem today. Hopefully it isn't permanent.

 

I'm going on 6 months. I hate it!! :'(

 

I have a current problem on my EPS system too :/ My problem is... My oil cooler gasket blew...oil went everywhere and caused a fire once the oil touched my header. My motor is working, everything looks great under the hood now...BUT...no power steering. I replaced the power steering ecu/module and now according to the mechanic its the torque sensor... My fire was only on the header and all melted wires were redone and soldered on back to oem. Could the torque sensor be fried because of that? The torque sensor is expensive and i dont want to jump the gun

 

The reason mine died was exactly the same, I had a small engine bay fire on track due to a turbo leak. I had my whole EPS loom replaced, but for some weird reason the connector plug was damaged on the torque sensor, so that was changed too. After that and full EPS relearn, I've never had an issue since.

 

Looking at the manual, the torque sensor has a mechanical part inside that moves up and down depending if the wheels are turned left or right. I'd imagine this part could stick, causing no-code type of issues. If it stuck center, you might loose all assist. If it stuck high or low, you might have heavy steering in one direction only. This may be worth looking into.

Anyone have a torque sensor sitting around they want to take apart? It seems to be considered non-serviceable. I say nothing is non-serviceable

 

Lets get this solved!

 

It's either the Torque Sensor or the EPS module. I'm betting the TS because it gets worse in the cold. I had a TS in my hands and didn't tear it apart due to time constraints. I did tear the rack down and it was flawless. Does ANYONE have a spare/dead TS they are willing to donate to science? I have all the proper electronics test gear to troubleshoot one. I can even chill it under test and expose it to harmonics.

Just thought: I need to check the EPS mainboard for cracked solder joints. The cold will expose those. I still think it's the TS though because everyone I've heard complaining says it pulls left and fights right.

 

This would be interesting if you could test one.

You must have breakers yards in the US to get cheap / used parts from?

 

I'll get one somehow.

As far as heavy steering in one direction/light in the other, if the problem comes about all of a sudden, it's some type of EPS issue.

If you have a car that has been this way since you bought it, or been this way after an accident, look for a bent front lower a-arm. They bend VERY easy, and reduce the caster big time. I had a car here with a bent arm. I was about to look into the EPS, but since there was no EPS light I told him lets just wait and align it first.

The HIGHEST I could get the left front caster was 0 Caster on the right was 6 or so. This caused light steering to the right. And it should, that is caster's job. Road feedback, steering resistance, and wheel pitching in turns.