AutoCodes – Saab – U1016 Saab

U1016 Saab Code - Invalid Or Missing Data For Powertrain/Engine Control Module

Quick Answer

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Common causes include Faulty Powertrain/Engine Control Module (PCM/ECM), Powertrain/Engine Control Module harness is open or shorted, Powertrain/Engine 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: U1016 Saab indicates Invalid Or Missing Data For Powertrain/Engine Control Module.
Common causes: Common causes include Faulty Powertrain/Engine Control Module (PCM/ECM), Powertrain/Engine Control Module harness is open or shorted, Powertrain/Engine 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 1,636

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 22, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code U1016 Saab Description

Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. When a module receives a message for a critical operating parameter, the module records the identification number of the module which sent the message for the state of health monitoring/node alive messages. A critical operating parameter is one which, when not received, requires that the module use a default value for that parameter. Once an identification number is learned by a module, it will monitor for that module node alive message. Each module on the class 2 serial data circuit is required to send a Node Alive message every 2 seconds. When no message is detected from a learned identification number for 5 seconds, a Diagnostic Trouble Code (DTC) U1016 is set.

OBDII Code U1016 Saab - Invalid Or Missing Data For Powertrain/Engine Control Module - AutoCodes.com — U1016 Saab Code - Invalid Or Missing Data For Powertrain/Engine Control Module

What does this mean?

What are the Possible Causes of the DTC U1016 Saab?

Faulty Powertrain/Engine Control Module (PCM/ECM)
Powertrain/Engine Control Module harness is open or shorted
Powertrain/Engine Control Module circuit poor electrical connection

How to Fix the DTC U1016 Saab?

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 does this mean?

Code Tech Notes

This is typically an electrical wiring connection issue at one of the controllers being monitored by the manufacturer.
It can occur if:
Someone changes a battery while the ignition switch is left on, that is, left in the RUN position.
Someone flashes/upgrades their engine controller - other modules unable to communicate with the PCM during this process - this will set U1016 at a multitude of controllers on the vehicle - all false codes. Erase and carry on.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the U1016 Saab 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 U1016 Saab Code

1. What are the common symptoms of the OBDII code U1016 in a Saab vehicle?

The common symptoms of code U1016 in a Saab include engine stalling, rough idling, poor acceleration, and issues with starting the vehicle.

2. What does the OBDII code U1016 "Invalid Or Missing Data For Powertrain/Engine Control Module" mean in a Saab?

The U1016 code indicates that there is a communication problem between the Powertrain Control Module (PCM) and other modules in the vehicle, resulting in missing or incorrect data being sent or received.

3. What are the possible causes of the U1016 code in a Saab?

Possible causes of the U1016 code in a Saab include faulty wiring or connections, a malfunctioning PCM, issues with other control modules, or a software glitch in the vehicle's communication system.

4. How can I diagnose the U1016 code in my Saab?

Diagnosing the U1016 code typically involves using a professional OBDII scanner to retrieve the specific codes, checking the wiring and connections for any faults, and performing a thorough inspection of the vehicle's control modules.

5. Can I continue driving my Saab with the U1016 code?

It is not recommended to continue driving your Saab with the U1016 code present, as it can lead to potential safety hazards and further damage to the vehicle. It is best to address the issue promptly.

6. How can I repair the U1016 code in my Saab?

Repairing the U1016 code may involve fixing any wiring or connection issues, replacing a faulty PCM or control module, updating software, or resetting the system to resolve the communication problem.

7. Is the U1016 code easy to fix on a Saab?

The complexity of fixing the U1016 code in a Saab can vary depending on the underlying cause. Simple wiring issues may be easier to address, while more complex problems may require professional diagnosis and repair.

8. Can the U1016 code be triggered by a loose gas cap in a Saab?

While a loose gas cap is unlikely to trigger the U1016 code directly, it is important to ensure all components of the vehicle are properly secured to prevent any potential issues that could lead to diagnostic trouble codes.

9. Will resetting the U1016 code make it go away permanently?

Simply resetting the U1016 code may not permanently resolve the underlying issue causing the communication error. It is crucial to diagnose and fix the root cause of the problem to prevent the code from reoccurring.

10. How much does it typically cost to repair the U1016 code in a Saab?

The cost of repairing the U1016 code in a Saab can vary depending on the specific cause of the issue, the parts needed for repair, and whether professional labor is required. It is advisable to consult a mechanic for an accurate estimate.