AutoCodes – Ford – U0106 Ford

U0106 Ford Code - Lost Communication With Glow Plug Control Module

Quick Answer

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Common causes include Faulty Glow Plug Control Module, Glow Plug Control Module harness is open or shorted, Glow Plug Control Module circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: U0106 Ford indicates Lost Communication With Glow Plug Control Module.
Common causes: Common causes include Faulty Glow Plug Control Module, Glow Plug Control Module harness is open or shorted, Glow Plug Control Module circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 13,936

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 29, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0106 Ford Description

A Controller Area Network (CAN) is a vehicle bus standard designed to interconnect automotive devices without a host computer. Operating information and commands are exchanged among the devices. The devices have programmed information about what messages are needed to be exchanged on the serial data circuits. CAN bus uses two dedicated wires for communication. The wires are called CAN high and CAN low. When the CAN bus is in idle mode, both lines carry 2.5V. When data bits are being transmitted, the CAN high line goes to 3.75V, and the CAN low drops to 1.25V, thereby generating a 2.5V differential between the lines. Since communication relies on a voltage differential between the two bus lines, the CAN bus is NOT sensitive to inductive spikes, electrical fields, or other noise.

OBDII Code U0106 Ford - Lost Communication With Glow Plug Control Module - AutoCodes.com — U0106 Ford Code - Lost Communication With Glow Plug Control Module

What does this mean?

What are the Possible Causes of the DTC U0106 Ford?

Faulty Glow Plug Control Module
Glow Plug Control Module harness is open or shorted
Glow Plug Control Module circuit poor electrical connection

How to Fix the DTC U0106 Ford?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U0106 Ford code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U0106 Ford Code

1. What does the OBDII code U0106 mean on a Ford vehicle?

The U0106 code indicates a loss of communication between the Powertrain Control Module (PCM) and the Glow Plug Control Module (GPCM).

2. What are the common symptoms of the U0106 code in Ford vehicles?

Symptoms may include difficulty starting the engine, rough idling, reduced engine performance, or the Check Engine Light illuminating.

3. What causes the U0106 code in Ford vehicles?

Common causes include faulty wiring or connectors, a malfunctioning Glow Plug Control Module, issues with the PCM, or electrical interference.

4. Can a dead battery trigger the U0106 code on a Ford?

Yes, a weak or dead battery can cause communication errors, including the U0106 code.

5. How do you diagnose the U0106 code on a Ford vehicle?

Diagnosis involves checking the wiring and connectors for damage, testing the Glow Plug Control Module, and verifying proper power and ground connections.

6. Can the U0106 code affect engine performance?

Yes, it can lead to poor engine performance, especially in cold weather, as the glow plugs may not function properly.

7. Is it safe to drive with the U0106 code on a Ford?

Driving may be possible, but it could result in hard starting, especially in cold conditions, and may damage related components if left unresolved.

8. How can you fix the U0106 code on a Ford vehicle?

Repairs may include fixing damaged wiring, replacing the Glow Plug Control Module, or reprogramming the PCM if necessary.

9. How much does it cost to fix the U0106 code on a Ford vehicle?

Repair costs vary but can range from $100 to $500, depending on whether wiring repairs or module replacements are needed.

10. Can a software update fix the U0106 code on a Ford vehicle?

In some cases, a PCM software update may resolve communication issues, but it depends on the specific fault and diagnosis.

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