C1392

[Leonnh]

I currently have a fault with obd code of c1392

It has a host of lights abs, traction, hill start , spanner all in Orange

The vac pump was screaming and has been replaced along with 4 abs sensors

C1392 is calibration according to what I can sense

I’ve checked the volts on all 4 leads and are reading constant and correct

Any thoughts and how to do calibration without a computer ?

Thanks in advance

[GiveMeABreak]

C1392 is Electronic stability program (ESP): Not characterised

Nothing about calibration - it's a non-characterised fault. You'll get all manner of warnings when there is a fault with the system as it's responsible for everything from emergency collision braking, descent control, hill start etc, as well as the electronic handbrake and ESP / ABS functions.

Suspect areas could be any of the following - because the specific fault is uncharacterised...

• Hydraulic block ABS / ESP
• ABS/ESP ECU
• Wheel speed sensors
• Drive axles
• Steering wheel angle sensor
• Tyres
• Magnetic targets of the wheels