Error code · ABS and chassis

C059A — Power Steering Control Module - Rear Missing Calibration

Don’t put off the repair

Open this code in the appDownload the app

A fault code doesn’t yet mean the unit or sensor itself is faulty: often it’s the plug and connector leading to it.

Possible causes

What you can do yourself

  1. This is rear-wheel steering (fitted to some premium cars). When it fails the rear wheels usually lock straight — the car turns less sharply and needs more room to park.
  2. After replacement the unit is calibrated with a scan tool.

Stop and don’t drive on if:

  • The red brake light is on, or the brake pedal feels soft or sinks
  • The steering became very heavy, or the car pulls to one side when braking

The explanation comes from the error code reference in the AvtoElektrik PRO app.

Need a mechanic’s help?

Couldn’t fix it yourself? Oleg, an auto electrician, does computer diagnostics and repairs: he comes out anywhere in Almaty or sees you at his workshop.

Car computer diagnostics in AlmatyCall: +7 701 121 11 10

Want to figure it out yourself?

Oleg’s course “Car computer diagnostics with a scan tool”: how to hook up a scanner, read codes and live data, and use them to find the cause. The first lessons are free.

Scan tool diagnostics course →

Nearby codes

All codes in C059x–C05Fx →

Who keeps this reference

The reference is kept by Oleg Dmitriev, an auto electrician from Almaty with 26 years of experience: computer diagnostics of cars and trucks, repair of control units (ECUs). Can’t find the cause? Message him.

Oleg’s auto electrician websiteWhatsApp +7 701 121 11 10