AutoCodes – Cadillac – U1716 Cadillac

U1716 Cadillac Code - Passenger Power Window Low Speed Serial Data Line Or Sensor Circuit

Quick Answer

Express Up operation of the front door power windows is monitored and controlled by the front door modules and the window sensors. Common causes include Faulty Passenger Power Window Sensor/Motor, Passenger Power Window Sensor/Motor harness is open or shorted, Passenger Power Window Sensor/Motor 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: U1716 Cadillac indicates Passenger Power Window Low Speed Serial Data Line Or Sensor Circuit.
Common causes: Common causes include Faulty Passenger Power Window Sensor/Motor, Passenger Power Window Sensor/Motor harness is open or shorted, Passenger Power Window Sensor/Motor 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 935

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 Jun 05, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code U1716 Cadillac Description

Express Up operation of the front door power windows is monitored and controlled by the front door modules and the window sensors. Each front door window motor has a window sensor mounted to it. The Driver Door Module (DDM) and the Passenger Front Door Module (PFDM) each supply battery voltage and ground to power their respective window sensors. The door modules and sensors communicate with each other via a power window high-speed serial data circuit, and a power window low-speed serial data circuit. The window sensor detects differences in the window motors electrical pulses to determine if there is an obstruction to the travel of the window glass. The door modules use the information generated by the sensors to disable the Express-Up movement of a window or reverse the direction of travel, in the event that a passenger, or other obstacles, has become trapped in it.
The power window low-speed serial data circuit is a unique two-way serial data communications link between the door module and the sensor.
State-of-health messages, the position of the window glass in relation to the distance traveled by the window, and the direction in which the window is moving are communicated via this circuit.
The Diagnostic Trouble Code (DTC) will be set by the driver door module (DDM), or by the passenger front door module (PFDM) when the DDM or the PFDM has detected any of the following conditions:
- The door module cannot communicate with the sensor over the power window low-speed serial data line.
- The power window low-speed serial data line is open.
- The power window low-speed serial data line is shorted to ground.
- The power window low-speed serial data line is shorted to battery.
- The window sensor battery voltage circuit has failed.
- The window sensor low reference circuit has failed.

OBDII Code U1716 Cadillac - Passenger Power Window Low Speed Serial Data Line Or Sensor Circuit - AutoCodes.com — U1716 Cadillac Code - Passenger Power Window Low Speed Serial Data Line Or Sensor Circuit

What does this mean?

What are the Possible Causes of the DTC U1716 Cadillac?

Faulty Passenger Power Window Sensor/Motor
Passenger Power Window Sensor/Motor harness is open or shorted
Passenger Power Window Sensor/Motor circuit poor electrical connection
Faulty Passenger Front Door Module (PFDM)

How to Fix the DTC U1716 Cadillac?

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 U1716 Cadillac 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 U1716 Cadillac Code

1. What does OBDII code U1716 mean on a Cadillac?

Code U1716 indicates an issue with the passenger power window low-speed serial data line or sensor circuit, which may affect communication between the window module and other systems.

2. What are the symptoms of code U1716 on a Cadillac?

Common symptoms include the passenger power window not operating, intermittent window functionality, or a malfunction indicator light on the dashboard.

3. What causes OBDII code U1716 to trigger?

This code is typically caused by a faulty window switch, damaged wiring or connectors in the serial data circuit, or a malfunctioning power window control module.

4. Can a blown fuse cause code U1716 on a Cadillac?

Yes, a blown fuse related to the power window circuit can interrupt communication, potentially triggering code U1716.

5. How do you diagnose code U1716 on a Cadillac?

Diagnosis involves checking for loose or damaged connectors, inspecting the wiring for the passenger window circuit, and testing the window switch and control module for proper operation.

6. Is code U1716 specific to the passenger window only?

Yes, this code specifically refers to the low-speed serial data line or sensor circuit for the passenger power window on the affected Cadillac model.

7. Can software issues cause code U1716?

Yes, outdated or corrupted software in the power window control module may lead to communication errors and trigger this code.

8. How can you fix code U1716 on a Cadillac?

Repairs typically involve replacing the damaged wiring or connectors, resetting the control module, updating software, or replacing the faulty window switch or control module.

9. Can I still drive my Cadillac with code U1716?

Yes, you can still drive, but the passenger power window may not function properly, which could be inconvenient, especially in adverse weather conditions.

10. How much does it cost to repair code U1716?

Repair costs vary depending on the specific issue, but fixes like wiring repairs or module replacements can range from $100 to $500 or more, including parts and labor.