AutoCodes – Ford – U0159 Ford

U0159 Ford Code - Lost Communication With Parking Assist Control Module 'A'

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 Parking Assist Control Module 'A', Parking Assist Control Module 'A' harness is open or shorted, Parking Assist Control Module 'A' 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: U0159 Ford indicates Lost Communication With Parking Assist Control Module 'A'.
Common causes: Common causes include Faulty Parking Assist Control Module 'A', Parking Assist Control Module 'A' harness is open or shorted, Parking Assist Control Module 'A' 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 4,075

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 Apr 02, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U0159 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. The Diagnostic Trouble Code (DTC) sets when a periodic message from the Parking Assist Control Module 'A' has not been received.

OBDII Code U0159 Ford - Lost Communication With Parking Assist Control Module 'A' - AutoCodes.com — U0159 Ford Code - Lost Communication With Parking Assist Control Module 'A'

What does this mean?

What are the Possible Causes of the DTC U0159 Ford?

Faulty Parking Assist Control Module 'A'
Parking Assist Control Module 'A' harness is open or shorted
Parking Assist Control Module 'A' circuit poor electrical connection

How to Fix the DTC U0159 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 U0159 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 U0159 Ford Code

1. What does OBDII code U0159 mean on a Ford vehicle?

Code U0159 indicates that the vehicle's communication network has lost communication with the Parking Assist Control Module 'A'.

2. What are the common symptoms of U0159 on a Ford?

Symptoms may include the parking assist system not working, a warning light on the dashboard, or intermittent beeping when the system is inactive.

3. What causes U0159 to appear on a Ford?

The common causes include a faulty Parking Assist Control Module, wiring issues like damaged or corroded connectors, or a network communication failure in the vehicle's CAN bus system.

4. Can a dead battery cause the U0159 code on a Ford?

Yes, a weak or dead battery can disrupt communication between modules, potentially triggering the U0159 code.

5. How can I fix code U0159 on my Ford?

Inspect and repair any damaged wiring or connectors, check for corrosion, ensure the battery is fully charged, and replace the Parking Assist Control Module if necessary.

6. Can I drive my Ford with a U0159 code?

Yes, but the parking assist system may not function, so extra caution is needed when parking or maneuvering.

7. How do I diagnose the U0159 code on a Ford?

Use an OBDII scanner to confirm the code, inspect the wiring and connectors for damage or corrosion, and test the Parking Assist Control Module for functionality.

8. Is the Parking Assist Control Module 'A' the only module affected by U0159?

While U0159 specifically refers to Parking Assist Control Module 'A', communication issues in the network may also affect other related systems.

9. How much does it cost to repair a U0159 code on a Ford?

The cost can vary depending on the issue, ranging from $50 for simple wiring repairs to $500 or more if the Parking Assist Control Module needs replacement.

10. Will clearing the U0159 code fix the problem on my Ford?

Clearing the code may temporarily remove the warning, but the underlying issue must be resolved to prevent the code from returning.