AutoCodes – Generic – P1671

P1671 Code - Quad Driver Module 'C' Fault Detected Conditions

Quick Answer

With the key on, the Powertrain Control Module (PCM) detects an open, short-to-ground or short-to-voltage on the QDM 'C' fault line (to the Air pump relay or Air pump solenoid), condition met for 20 seconds. Common causes include Faulty Quad Driver Module, Quad Driver Module harness is open or shorted, Quad Driver 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: P1671 indicates Quad Driver Module 'C' Fault Detected Conditions.
Common causes: Common causes include Faulty Quad Driver Module, Quad Driver Module harness is open or shorted, Quad Driver 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 12,578

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 Sep 08, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1671 Description

OBDII Code P1671 - Quad Driver Module 'C' Fault Detected Conditions - AutoCodes.com — P1671 Code - Quad Driver Module 'C' Fault Detected Conditions

What does this mean?

What are the Possible Causes of the DTC P1671?

Faulty Quad Driver Module
Quad Driver Module harness is open or shorted
Quad Driver Module circuit poor electrical connection

How to Fix the DTC P1671?

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 P1671 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.

Need more information about the P1671 code?

Need more information on how to fix the P1671 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1671 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1671 Acura — Automatic Transmission To Engine Control Module No Signal
P1671 Buick — Quad Driver Module 'C' Fault Detected Conditions
P1671 Cadillac — Quad Driver Module 'C' Fault Detected Conditions
P1671 Chevrolet — Quad Driver Module 'C' Fault Detected Conditions
P1671 GMC — Quad Driver Module 'C' Fault Detected Conditions
P1671 Land Rover — Engine Control Module Cooling Fan Circuit High
P1671 Saab — Throttle Actuator Limp Home Relay Short To Positive
P1671 Volvo — CMP Actuator Performance Problem Or Signal Out Of Range

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 P1671 Code

1. What are the common symptoms of OBDII code P1671 (Quad Driver Module 'C' Fault Detected Conditions)?

- Common symptoms include engine misfires, rough idling, poor acceleration, and illuminated Check Engine Light.

2. What can cause the OBDII code P1671 to be triggered?

- The code P1671 is typically triggered by a malfunction in the Quad Driver Module 'C', which controls various electronic components in the vehicle.

3. How serious is the OBDII code P1671 (Quad Driver Module 'C' Fault Detected Conditions)?

- While the vehicle may still be drivable with this code, it is important to address it promptly to prevent potential damage to other engine components.

4. How can I diagnose the OBDII code P1671?

- Diagnosing the code P1671 usually involves using a diagnostic scanner to retrieve the specific trouble codes, followed by testing the Quad Driver Module 'C' and related circuits for faults.

5. What are some DIY repair tips for fixing the OBDII code P1671?

- DIY repair tips may include checking and repairing any damaged wiring or connectors related to the Quad Driver Module 'C', or replacing the module itself if necessary.

6. Can I continue driving with the OBDII code P1671 present?

- It is not recommended to ignore the OBDII code P1671 and continue driving, as it can lead to further issues and potentially affect the vehicle's performance.

7. How much does it typically cost to repair the OBDII code P1671?

- The cost of repairing the OBDII code P1671 can vary depending on the underlying cause and the extent of the repair needed. It is advisable to consult a professional mechanic for an accurate estimate.

8. Are there any preventive measures to avoid the OBDII code P1671 in the future?

- Regular maintenance, such as checking and replacing worn-out components, can help prevent issues that may trigger the OBDII code P1671.

9. Can a faulty Quad Driver Module 'C' affect other systems in the vehicle?

- Yes, a faulty Quad Driver Module 'C' can potentially affect other electronic systems in the vehicle, leading to various performance issues.

10. Is it necessary to reset the Check Engine Light after repairing the OBDII code P1671?

- Yes, it is recommended to reset the Check Engine Light after repairing the OBDII code P1671 to ensure that the issue has been resolved and to monitor for any new problems.