P1671 GMC 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 GMC 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.
Code P1671 GMC Description
What are the Possible Causes of the DTC P1671 GMC?
- 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 GMC?
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 GMC 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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Frequently Asked Questions about P1671 GMC Code
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