Power steering fault?

[sundaydriver]

00668 - Supply Voltage Terminal 30
00668 - Supply Voltage Terminal 30: Signal Outside Specifications
00668 - Supply Voltage Terminal 30: Implausible Signal
Possible Causes
Fuse(s) faulty
Wiring/Connectors from/to Control Module faulty
Power Supply (Battery/Generator) faulty
Possible Solutions
Check Fuse(s)
Check/Repair Wiring/Connectors from/to Control Module
Check Power Supply (Battery/Generator)
Special Notes
When found in an individual control module, it's most likely a local source (e.g. wiring/connectors).
When found in multiple control modules at the same time, it's most likely a common source (e.g. ground spot, battery, generator).
Intermittent codes are often stored during low outside temperature when the battery capacity goes down and may be ignored.

In other words prob the flat battery.
But the date and time

Why would the flat battery cause power steering problems?
And also do you think it's just a case of clearing the fault or has it caused some damage when the car was jump started?

I had so many error codes when they disconnected my battery at the bodyshop sometime ago. Now that you mention your weighty steering, I felt mine was also very heavy after the diconnection took place. Darrenattended to this.

Now, I seem to have a slighty weighty steering again, since the car has been to the bodyshop. They have promised me they had not disconnected the battery.

Hmmm, will PM darren and see what he thinks, maybe it's just a case of clearing the error codes!

[am1w]

00668 - Supply Voltage Terminal 30
00668 - Supply Voltage Terminal 30: Signal Outside Specifications
00668 - Supply Voltage Terminal 30: Implausible Signal
Possible Causes
Fuse(s) faulty
Wiring/Connectors from/to Control Module faulty
Power Supply (Battery/Generator) faulty
Possible Solutions
Check Fuse(s)
Check/Repair Wiring/Connectors from/to Control Module
Check Power Supply (Battery/Generator)
Special Notes
When found in an individual control module, it's most likely a local source (e.g. wiring/connectors).
When found in multiple control modules at the same time, it's most likely a common source (e.g. ground spot, battery, generator).
Intermittent codes are often stored during low outside temperature when the battery capacity goes down and may be ignored.

In other words prob the flat battery.
But the date and time

Why would the flat battery cause power steering problems?
And also do you think it's just a case of clearing the fault or has it caused some damage when the car was jump started?

I had so many error codes when they disconnected my battery at the bodyshop sometime ago. Now that you mention your weighty steering, I felt mine was also very heavy after the diconnection took place. Darrenattended to this.
Now, I seem to have a slighty weighty steering again, since the car has been to the bodyshop. They have promised me they had not disconnected the battery.

Hmmm, will PM darren and see what he thinks, maybe it's just a case of clearing the error codes!

That's what he did for me.

[Snoopy]

Reading the fault discription it just logged a fault on that unit as the voltage (7.4V) was too low. Its only logged one fault. I don't think that has anything to do with your steering feel.

What is your battery voltage now with the car not running?
This is a guess but if its still lowish between 11.8V-12,6V it may still be putting a huge load on the alt to charge the battery. The steering takes alot of power, so if the alt is using most its power to try and charge the battery there will be a voltage drop when you turn the steering this may and i stress may cause what your feeling.

EDIT due to last posts
PS. I found alot of the fault that come up after a battery disconnect clear themselfs anyway after a decent drive.
That one posted looks like it will after quite a few cycles.

[sundaydriver]

Reading the fault discription it just logged a fault on that unit as the voltage (7.4V) was too low. Its only logged one fault. I don't think that has anything to do with your steering feel.

What is your battery voltage now with the car not running?
This is a guess but if its still lowish between 11.8V-12,6V it may still be putting a huge load on the alt to charge the battery. The steering takes alot of power, so if the alt is using most its power to try and charge the battery there will be a voltage drop when you turn the steering this may and i stress may cause what your feeling.

EDIT due to last posts
PS. I found alot of the fault that come up after a battery disconnect clear themselfs anyway after a decent drive.
That one posted looks like it will after quite a few cycles.

Thanks Snoopy, very helpful.

Can you read the battery voltage thru VCDS or do you need a voltage meter?

[SteveP]

Have you had the battery disconnected recently?

If so it's normal to get the terminal 30 error in my experience, and the steering controller will need to re-calibrate, but you would have seen the steering wheel symbol lite up on the dashboard.

[sundaydriver]

Have you had the battery disconnected recently?

If so it's normal to get the terminal 30 error in my experience, and the steering controller will need to re-calibrate, but you would have seen the steering wheel symbol lite up on the dashboard.

The battery hasnt been disconnected, it ran flat (interior lights left on) and had to be jump started with a power pack.

When the battery was flat and i tried to start it a load of warnings appeared on the MFD (workshop and something else but cannot remember now). They dissapeared once the car was jumped and havnt appeared since, just the steering feels heavy.

[mac7]

I recall that on the Mk5 you could change the amount of steering assistance with VCDS - is it the same on the Mk6? Could a flat battery affect that?

[ajmoir36]

Interesting about the interior lights as I thought now it was impossible to leave them on. i.e. Locking the car turns them off, even in the on perm mode.  Its to save the battery, might be wrong though.

[Snoopy]

From the fault code it dropped to 7.6V a flat battery is looked on in elec/cemical wise as 11.8V so that 7.6V must have been recorded when you put a huge load on the battery. Trying to start the car for example. This is far too low a voltage for electrical circuits to work if they are designed for ~12V and so they would act as if you had removed the battery.

[sundaydriver]

Cheers Snoopy, the car went into the dealers yesterday for the power steering and creaky seat.

The creaky seat they can fix by replacing the frame at the back but regarding the power steering all they said is that there's nothing wrong, a fault code was found but but dont know why but they didn't even clear the code which i found a little strange. I did a VCDS scan when i got the car back and cleared it myself.