العربية
U0159

Lost Communication With Parking Assist Control Module "A"

Car Fault Codes Network

Severity Low It can wait a little, but get it checked soon.
Can you still drive? Yes, normally
Who can fix it? Needs a workshop
Typical repair time 30 minutes – 4 hours
Typical cost SAR 100 to 3,000

What it means

The parking assist module reads the parking sensors in the bumpers and gives audible warnings or shows distance on the display, and on some vehicles runs automatic parking. This code sets when messages from this module stop reaching the network, so parking assist stops working. Driving is not affected, but the risk of bumping into something while parking goes up.

Related codes: U0140U0155U0121U0019

Symptoms4

  • Message that parking assist is unavailable, or its light on.
  • No parking sensor beeps when approaching obstacles.
  • No distance graphic on the display when reversing.
  • Automatic parking not working on vehicles that have it.

Possible causes6

  • Blown module power fuse.
  • Weak battery or low voltage.
  • Water or corrosion in the module connector; the module is often in the trunk or behind a side trim panel.
  • Poor ground connection.
  • Open or shorted network wiring to the module, sometimes after bumper repair or a tow hitch installation.
  • Internal module failure.

How to diagnose5

  1. Find the module location in the service information and check whether earlier work was done on the rear bumper or trunk.
  2. Check the battery and the module fuse.
  3. Try to connect to the module with a scan tool; if it does not respond, measure power and ground at its connector.
  4. Inspect the connector and module area for water or corrosion.
  5. Check the network lines to the module and compare their resistance with the manufacturer specification.

How to fix5

  1. Replace the blown fuse and charge a weak battery.
  2. Dry the module area, fix the leak and clean the connector.
  3. Repair damaged network wiring or grounds.
  4. Replace the module if proven faulty, then program it as the manufacturer instructs.
  5. Clear the codes and test the parking sensors by slowly approaching an obstacle.

Repair cost

In Saudi riyals; the highlighted part is the expected range for this fault.

The cost is low for a fuse or connector, and rises when the module must be replaced and programmed.

Prices are rough estimates for common cars at independent workshops and vary with the car and the source of the part.
Prices last updated: September 2026

Frequently asked questions

Can I drive with this code?

Yes. It does not affect the engine or brakes, but take extra care when parking and reversing because the warnings will not work.

Is the problem in the bumper sensors?

Usually not. A single failed sensor sets its own code in the parking module. This code means the module itself has dropped off the network.

This guide is for information only and does not replace an inspection by a qualified technician. If the fault involves brakes, steering, engine temperature, electrics or refrigerant, do not attempt the repair yourself.

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Related codes

U0140 Lost Communication With Body Control Module High Network U0155 Lost Communication With Instrument Panel Cluster (IPC) Control Module High Network U0121 Lost Communication With Anti-Lock Brake System (ABS) Control Module High Network U0019 Low Speed CAN Communication Bus Medium Network U0100 Lost Communication With ECM/PCM "A" High Network U0107 Lost Communication With Throttle Actuator Control Module High Network