U0155 – Lost Communication With Instrument Cluster (IPC): Symptoms, Causes & Fix Guide

DTC U0155 means the vehicle has lost communication with the Instrument Panel Cluster (IPC). This can result in a blank dashboard, incorrect gauge readings, or no warning lights.

❓ What is DTC Code U0155?

U0155 – Lost Communication With Instrument Panel Cluster (IPC)
The ECU communicates with the Instrument Cluster via the CAN Bus. When this communication is lost, it triggers the U0155 code, which affects dashboard functions.

⚠️ Common Symptoms of U0155

• ⚡ Blank or dead dashboard display

• 🚨 Warning lights not illuminating properly

• 🔧 Gauges stop functioning (speedometer, fuel gauge, etc.)

• 💡 Flickering instrument panel lights

• 🚫 "Service Required" or "Communication Error" message

🔍 Possible Causes of U0155

1. 🔌 Faulty or corroded instrument cluster wiring

2. ⚡ Loose or damaged CAN Bus connections

3. 🧠 Faulty Instrument Cluster (IPC)

4. 🔧 Blown fuses related to the dashboard

5. 💦 Water ingress or corrosion in wiring harness

🛠️ How to Fix U0155

✅ 1. Check Connectors & Wiring

Inspect the connections behind the dashboard for damage.
👉 Shop Wiring & Electrical Parts →

✅ 2. Test CAN Bus Communication

Use a diagnostic scanner to check for network faults.

✅ 3. Inspect Fuses & Relays

A blown fuse can cut off communication.

✅ 4. Replace Faulty Instrument Cluster

If the IPC is faulty, replace it with a genuine part.
👉 Instrument Cluster & Electrical Parts →

🚗 Cars Commonly Affected by U0155

🛒 Nayapurna Parts Links for Fast Fixes

• Wiring & Electrical Components

• Instrument Cluster & Dashboard Spares

• Tata Dashboard & Electrical Parts

• Hyundai Cluster & Wiring Parts

• Honda Instrument Panel Parts

💡 Quick Tips

• Disconnect battery before working on the dashboard

• Always use an OBD2 scanner to confirm the fault

• Don’t ignore cluster issues—critical warnings may go unseen

✅ Final Words

If you face a U0155 code, don't take dashboard faults lightly. Get genuine electrical components and dashboard spares from nayapurnaonline.com to restore safety and functionality.