U0423

Invalid Data Received From Instrument Panel Cluster Control Module

Car Fault Codes Network

Can you still drive? With care, short trips only

Who can fix it? Needs a workshop

Typical repair time 30 minutes – 4 hours

Typical cost SAR 100 to 4,000

What it means

The instrument cluster shares some data with other modules over the network, such as the odometer reading and the status of some buttons and settings. This code means another module is receiving its messages, but the content is invalid. The cause is usually cluster programming, low voltage, or a fault in its connector or the cluster itself.

Symptoms4

Cluster gauges or display acting erratically or intermittently.
Warning lights or messages that come and go.
Some settings not saved or cluster-related functions not working.
On some vehicles, starting problems if the cluster is part of the immobilizer system.

Possible causes5

Incorrect programming or coding of the cluster after replacement or repair.
Low battery voltage or a poor ground.
Corroded or loose cluster connector.
Intermittent network wiring fault.
Internal cluster failure, such as a cracked solder joint or failed component on its circuit board.

How to diagnose5

Read codes from the cluster and other modules and identify which module stored the code.
Check whether the cluster was replaced or repaired recently, and confirm its coding and part number.
Measure battery voltage and check the cluster power and ground.
Inspect the cluster connector for looseness or corrosion.
Check the network wiring to the cluster.

How to fix5

Charge or replace the battery.
Clean and secure the cluster connector and repair the ground.
Reprogram or recode the instrument cluster.
Have the cluster repaired by a specialist, or replace and program it if proven faulty.
Clear the codes and confirm the code does not return.

Repair cost

0–500

500–2,000

2,000–5,000

5,000+

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

The cost is low for a connector or coding fix, rises with a cluster repair, and reaches the upper end if it 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 the instrument cluster be repaired instead of replaced?

In many cases yes. Specialist shops repair solder or component faults for less than a new cluster, often without new coding.

Why did the code appear after fitting a used cluster?

A used cluster carries the coding of its original vehicle and needs coding for your vehicle before other modules accept its data.

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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