RAM Truck Error Code P0670: How to Fix It

Q: What causes RAM P0670 error code?

P0670 is typically caused by a faulty glow plug control module, damaged wiring to the module, corroded electrical connections, or in some cases, multiple failed glow plugs that overload the control circuit.

Q: Can I drive my RAM truck with P0670 code?

While you may be able to drive the truck, especially in warm weather, the P0670 code indicates compromised cold-start capability. In cold weather, the engine may be very difficult or impossible to start without functioning glow plugs.

Q: How much does it cost to fix P0670 on a RAM truck?

Repair costs vary but typically range from $200-600. A glow plug control module costs $150-300, individual glow plugs cost $15-40 each, and labor charges depend on your location and whether you use a dealership or independent shop.

Q: How long do glow plug modules last in RAM trucks?

Glow plug control modules typically last 100,000-150,000 miles under normal conditions. However, harsh operating conditions, frequent short trips, or electrical issues can reduce their lifespan significantly.

Q: Will P0670 code clear itself?

No, P0670 will not clear itself as it indicates a hard failure in the glow plug control circuit. The underlying problem must be repaired and the code manually cleared with a scanner before it will disappear.

Abstract

The P0670 error code in RAM trucks indicates a problem with the glow plug module control circuit, specifically affecting the Cummins diesel engine's glow plug controller. This issue can cause hard starting, rough idle, and poor cold weather performance in your diesel truck.