P0670 Volvo Code - Glow Plug Control Module 1 Control Circuit/Open
Quick Answer
This fault code is stored in the Engine Control Module (ECM) when a malfunction occurs in the glow plug control module. Common causes include Faulty Heater Plug, Heater Plug harness is open or shorted, Heater Plug 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
- P0670 Volvo indicates Glow Plug Control Module 1 Control Circuit/Open.
- Common causes
- Common causes include Faulty Heater Plug, Heater Plug harness is open or shorted, Heater Plug 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 P0670 Volvo Description
A current clamp is an ideal test to ensure all glow plugs are functioning correctly. An initial current flow of 10 to 12 Amps to reasonable for each glow plug. This current flow drops to approximately half the initial figure after a few seconds of operating. This is due to the temperature and hence resistance of the glow plug increasing.
Most glow plugs are operated by a pulse width modulated control. This increases the life span of the glow plug and allows more accurate temperature control for any operating condition.
What are the Possible Causes of the DTC P0670 Volvo?
- Faulty Heater Plug
- Heater Plug harness is open or shorted
- Heater Plug circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0670 Volvo?
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 P0670 Volvo 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 P0670 Volvo Code
1. What are the common symptoms of OBDII code P0670 in a Volvo related to the Glow Plug Control Module 1 Control Circuit/Open?
- Common symptoms include hard starting, rough idling, poor fuel economy, and the Check Engine Light illuminating on the dashboard.
2. What are the possible causes of OBDII code P0670 indicating a Glow Plug Control Module 1 Control Circuit/Open in a Volvo?
- Possible causes include a faulty glow plug control module, damaged wiring or connectors, blown fuses, or issues with the glow plugs themselves.
3. How can I diagnose the Glow Plug Control Module 1 Control Circuit/Open issue in my Volvo with OBDII code P0670?
- A diagnostic scan tool can help pinpoint the exact cause of the issue by reading the trouble codes and identifying the specific component or circuit that needs attention.
4. Can I continue driving my Volvo with OBDII code P0670 related to the Glow Plug Control Module 1 Control Circuit/Open?
- It is not recommended to drive the vehicle with this issue as it can lead to further damage and potential engine performance problems.
5. How can I repair the Glow Plug Control Module 1 Control Circuit/Open problem in my Volvo triggering OBDII code P0670?
- Repair involves inspecting and testing the glow plug control module, checking the wiring for any damage, replacing faulty components, and clearing the trouble code with a diagnostic tool.
6. Are there any tips for preventing the recurrence of OBDII code P0670 in my Volvo after repairing the Glow Plug Control Module 1 Control Circuit/Open issue?
- Regular maintenance, including checking the glow plug system during service intervals, can help prevent the recurrence of this issue. Additionally, using high-quality glow plugs and components can improve longevity.
7. Can a DIY enthusiast without advanced automotive knowledge fix the Glow Plug Control Module 1 Control Circuit/Open problem causing OBDII code P0670 in a Volvo?
- While some basic mechanical skills are required, it is recommended to seek assistance from a professional mechanic or technician to properly diagnose and repair this issue due to the complexity of the electrical system involved.
8. Is it possible for a faulty glow plug to trigger OBDII code P0670 indicating a Glow Plug Control Module 1 Control Circuit/Open in a Volvo?
- Yes, a faulty glow plug can sometimes cause this error code to appear as the glow plug control module may detect an issue with the circuit due to a malfunctioning glow plug.
9. How long does it typically take to repair the Glow Plug Control Module 1 Control Circuit/Open problem associated with OBDII code P0670 in a Volvo?
- The repair time can vary depending on the exact cause of the issue, but it generally takes a few hours to diagnose, locate the problem, and perform the necessary repairs.
10. Are there any recalls or service bulletins related to OBDII code P0670 specifically for Volvo vehicles experiencing Glow Plug Control Module 1 Control Circuit/Open issues?
- It's advisable to check with Volvo authorized service centers or the manufacturer's website for any recalls or service bulletins related to this specific problem to ensure that all necessary repairs are addressed.
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