EPS Uneven assistance left and right

Questions not related to the fuel type, like Manual Gearbox, Body Work, Lights, Interior trim and Seats, Steering, Brakes, Beeping, Wheels and Tyres to be asked in this topic only.

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Think: Manual Gearbox, Seats, Bodywork, Lighting, Interior, A/C, Heater, Wheels, Steering, Brakes, Tyres and Suspension
My Name: Davenshaz

Member
Posts: 1
Joined: Mon Jun 17, 2019 3:21 pm
Model: C3 2006-2009, Facelift model
Year: 2007 (07)
Engine Size: 1.4 (8v)
Fuel Type: Petrol
Mileage: 76000
Trim Level: SX
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)

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Hi All,
My son has just started learning to drive in a 2007 C3 1.4, the EPS rack was making lots of whiney noises and kept failing whilst out on a drive. We have fitted a second-hand rack complete but now the steering feels normal to the left but way to easy to the right. I have tried using a SnapOn solus pro to calibrate the steering but it just says the ECU does not support the task requested. does anyone know what could be wrong? is there an easy fix? many thanks in advance.

Davenshaz
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My Name: Arfur Dent

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Posts: 3547
Joined: Sat Jul 23, 2011 3:47 pm
Model: C3 2002-2005, Original shape model
Year: 2002 (52)
Engine Size: 1.4 (16v)
Fuel Type: Diesel
Mileage: 100000
Trim Level: Exclusive
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: DV4 16-valve diesel (90 PS)
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Davenshaz wrote: ↑Mon Jun 17, 2019 3:38 pm Hi All,
My son has just started learning to drive in a 2007 C3 1.4, the EPS rack was making lots of whiney noises and kept failing whilst out on a drive. We have fitted a second-hand rack complete but now the steering feels normal to the left but way to easy to the right. I have tried using a SnapOn solus pro to calibrate the steering but it just says the ECU does not support the task requested. does anyone know what could be wrong? is there an easy fix? many thanks in advance.

Davenshaz
Hello Davenshaz

Interesting, did you check all the mechanicals related to steering? Lower ball joint, top suspension bearing seized, could cause the rack to whine and this could have damaged the motor/ECU....

also

Citroen will change the ePAS rack complete and the ePAS ECU at the same time. They are so well linked that a faulty one can damage the other so they both get changed at the same time.

and

The tool to speak to ePAS ECU (and any ECU for that matter) on the C3 is to use Lexia/Diagbox (info here). That is the only too to be sure to read the C3.

But, I am not aware of any calibration, but that also doens't mean it's not there either :lol:
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