Powertrain
generic / SAE
P0818
Driveline Disconnect Switch Input Circuit
General electrical fault on the driveline disconnect switch input — used on AWD/4WD vehicles to electrically disengage the rear or front axle for fuel economy. With the input invalid the disconnect cannot be commanded.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number8 / 18
Possible causes
- Open or shorted switch wire high
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–400 €
- Estimated time: 0.4–1.5 h
- Component: driveline disconnect switch
- Component: wiring harness
- MIL / check engine light
Sources
References
sae:J2012