Detailed Description of Error P0680
OBDII error code P0680 is a generic trouble code that indicates a problem with the cylinder 10 glow plug circuit. This code is typically associated with diesel engines, which use glow plugs to assist in the combustion process. The glow plug circuit is responsible for providing the necessary voltage to the glow plug, allowing it to heat up and aid in the ignition of the fuel. When the engine control module (ECM) detects an open circuit or a malfunction in the cylinder 10 glow plug circuit, it will trigger the P0680 code.
In modern diesel engines, the glow plug circuit is typically controlled by the ECM, which receives input from various sensors and uses this information to determine when to activate the glow plugs. The ECM will typically monitor the glow plug circuit for any signs of malfunction, such as an open circuit, short circuit, or excessive resistance. If the ECM detects an issue with the cylinder 10 glow plug circuit, it will set the P0680 code and illuminate the check engine light.
Possible Causes of Error P0680
- Open or short circuit in the glow plug wiring harness
- Failed or faulty glow plug module
- Bad or corroded glow plug connector
- Wiring harness damage or chafing
- Glow plug relay failure
- ECM malfunction or software issue
- Faulty or dirty glow plug
- Low battery voltage or weak battery
- Corrosion or water damage in the glow plug circuit
Possible Fixes for Error P0680
- Inspect the glow plug wiring harness for any signs of damage, corrosion, or chafing, and repair or replace as necessary
- Check the glow plug module and relay for any signs of failure, and replace if necessary
- Clean or replace the glow plug connector to ensure good electrical contact
- Use a multimeter to test the glow plug circuit for any signs of open or short circuits
- Check the ECM for any software updates or reflash the ECM if necessary
- Replace the faulty or dirty glow plug with a new one
- Charge or replace the battery if the voltage is low
- Inspect the glow plug circuit for any signs of corrosion or water damage, and clean or replace components as necessary
