U0320 code meaning
Software Incompatibility With Power Steering Control Module
What U0320 means
The power steering control module drives the electric assist motor and needs calibration data that suit the steering gear and the vehicle. U0320 is logged when another module refuses to work with its software. No manufacturer documents U0320 publicly, but GM and Volkswagen show the background. GM preliminary information PIC5771 for the 2013 Buick LaCrosse with NJ2 steering reports that after a gear replacement the module often refused programming and set C056E symptom 42, calibration not programmed, so Techline had to supply the data. Volkswagen cured weak assist on 2010–2013 Golf, Jetta, Passat and Beetle by new J500 software, followed by basic settings of steering and angle sensor. U0131 is lost contact, U0420 invalid data, U0319 concerns the steering effort module. Steering may turn heavy with a warning lamp.
U0320 at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modePossible
- Repair difficultyWorkshop only
- Typical labor0.5 to 2.5 hours
- Clears after repairWhen cleared with a scanner
Symptoms of U0320
- Steering heavy or assist only partly available
- Power steering warning lamp or message
- Lane keeping or park steering functions switched off
Common causes of U0320
- Most likelySteering gear or steering module replaced without loading matching calibration
- PossibleSteering module software older than required by the other modules
- PossibleBasic setting or adaptation after programming not carried out
- Less likelyProgramming disturbed by voltage drop
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Power steering moduleControl module software
What each part of U0320 means
| U | Network system: communication between the control modules (CAN bus). |
| 0 | Generic code: it means the same on every make (SAE standard). |
| 20 | The exact fault in that area. |
What to do next
- Note U0320 and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about U0320
What does U0320 mean?
U0320 means "Software Incompatibility With Power Steering Control Module". The power steering control module drives the electric assist motor and needs calibration data that suit the steering gear and the vehicle. It is a generic code, so it means the same on every make.
Is it safe to drive with U0320?
Drive gently and only to a workshop. With U0320 the car can go into limp mode (reduced power) to protect itself.
Will U0320 fail an emissions test?
U0320 is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is U0320 to fix?
Difficulty: workshop only. A typical repair takes 0.5 to 2.5 hours of work. This is a job for a workshop.
Will U0320 clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.