P1670 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
- P1670 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 P1670 GMC Description
What are the Possible Causes of the DTC P1670 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 P1670 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 P1670 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 P1670 GMC Code
1. What does the OBDII code P1670 mean for GMC vehicles?
P1670 indicates a fault in the Quad Driver Module 'C,' which is responsible for controlling certain circuits in the vehicle’s electronic system.
2. What are common symptoms of the P1670 code in GMC vehicles?
Symptoms may include the check engine light turning on, erratic or failed operation of components like relays or solenoids, or noticeable drivability issues.
3. What causes the P1670 code to appear on a GMC vehicle?
Common causes include a short circuit, open circuit, faulty Quad Driver Module, or an issue with the wiring or connectors related to the module.
4. Can the P1670 code affect vehicle performance?
Yes, depending on the circuits controlled by the Quad Driver Module, this code can lead to issues like engine performance problems or malfunctions in auxiliary systems.
5. How can I diagnose the P1670 code on a GMC vehicle?
Use a scan tool to identify the affected circuits, visually inspect wiring and connectors for damage, and test the Quad Driver Module for proper function.
6. Is the P1670 code specific to certain GMC models?
No, this code can appear on various GMC models equipped with OBDII systems, though the affected circuits may vary between vehicles.
7. Can a faulty Quad Driver Module cause other OBDII codes?
Yes, if the module controls multiple circuits, its failure might trigger additional codes related to those circuits.
8. What repairs are typically needed for the P1670 code?
Repairs may involve replacing damaged wiring, connectors, or the Quad Driver Module itself, depending on the specific fault.
9. How much does it cost to fix the P1670 code on a GMC vehicle?
Costs vary based on the complexity of the repair, but replacing a Quad Driver Module can range from $100 to $500, excluding labor.
10. Can I clear the P1670 code without fixing the underlying issue?
Clearing the code without addressing the problem may temporarily remove the check engine light, but the issue will likely return and may worsen over time.
Discuss the causes and fixes for P1670 GMC OBDII Code
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