4WD Low Switch Circuit Electrical
Table of contents
P1875 CHEVROLET Possible Causes
- Faulty 4WD Low Switch
- 4WD Low Switch harness is open or shorted
- 4WD Low Switch circuit poor electrical connection
How do I fix code P1875 CHEVROLET?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P1875 CHEVROLET code
The cost of diagnosing the P1875 CHEVROLET code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P1875 CHEVROLET Description
With the engine speed over 450 rpm for 5 seconds, Fuel Cutoff not active, Vehicle Speed Sensor (VSS) input over engine vacuum at 0-105 kPa, gear range is D4, shift solenoid performance counters at zero, Transmission Fluid Temperature (TFT) input from 68-266°F, then Condition 1: 4WD Low switch in 4WD low, transfer case not in 4WD low, Torque Converter Clutch (TCC) slip speed from -3000 to -50 RPM, and VCM detected the speed ratio was 0.8-1.2 (speed ratio is rpm pided by the output speed) Condition 2: 4WD Low switch not in 4WD low, transfer case in 4WD low, TCC commanded on, TCC slip speed was 100 to 3000 RPM, and the VCM detected that the speed ratio was 2.5-2.9 for 10 seconds