P0670 DODGE code

A defective GPCM will set off this code all on its own. Other common issues that lead to a P0670 code are: GPCM harness that’s shorted or open. GPCM circuit that’s suffering from a poor electrical connection.

How do you fix trouble code P0670?

Zitat von Youtube: Check the glow plug control module itself and its electrical connections for any damages.

What is a glow plug control circuit?

The glow plug control unit uses a glow plug relay to switch the current for the glow plugs on and off. The more glow plugs monitored by a control unit, the higher the current the circuit will need. To reduce the current needed, glow plugs are often distributed across two circuits, with two glow plug relays.

How do you test a glow plug control module?

To test your glow plugs, simply connect a 12-volt test light to the positive battery terminal. Then disconnect the wires from each of your glow plugs and touch the probe of the test light to the terminal of the glow plug itself (not the wiring harness).

Where is the glow plug module on a Duramax?

Locate the glow plug controller to the driver side of the turbocharger near the firewall. Remove the glow plug power feed connector (round connector, left side of glow plug module) by pressing the two ridged segments of connector shell and pulling away from and out of the glow plug module.

What is P0607 code mean?

What the P0607 code means. P0607 is the standard OBD-II trouble code for an issue with the engine control module (ECM). The code suggests that the ECM is experiencing problems, such as power failure or memory loss, and thus may not be able to do its job properly.

How do I bypass glow plug controller?

Zitat von Youtube: So when you turn the key on it gets power then we're gonna ground it out using a switch in the cab. So I ran this through an existing hole in the firewall.

What are the symptoms of glow plug failure?

Six signs it’s time to replace your glow plugs

  • Hard starting. A hard starting engine is the most common indicator of damaged glow plugs. …
  • Engine misfiring. …
  • Rough idling. …
  • Decreased fuel efficiency. …
  • White smoke. …
  • Black smoke.


What causes glow plug relay failure?

Most Common Cause of Glow Plug Relay Failure



Like most other car parts, the glow plug relay can wear out naturally over time. Exposure to extreme temperatures as well as fluctuating electrical currents and misfiring injectors can also play a part in accelerating the process.

Can you start a diesel without glow plugs?

Glow plug is merely an aid for starting the engine. There are many designs still produced today without any glow plugs (eg military diesels run without any electricity), and even many modern diesel engines can be started if glow plugs fail (unless onboard computer prevents that).

Can faulty glow plugs cause loss of power?

Engine misfires or decrease in power and acceleration



If the glow plugs malfunction they will not provide the additional heat that aids in diesel combustion, which may cause the engine to experience misfires. The misfires may cause a loss in power, acceleration, and even fuel efficiency.