The automobile fault code P1875 indicates a problem with the 4WD Low Switch. The most common symptom is the Engine Light being ON or the Service Engine Soon Warning Light.

The cause of this fault code can be a faulty 4WD Low Switch, an open or shorted harness, or a poor electrical connection in the 4WD Low Switch circuit. To fix this issue, you should visually inspect the wiring harness and connectors for any damage. Look for broken, bent, pushed out, or corroded pins in the connectors.

The repair time for this issue is estimated to be around 1.0 hour. It is important to address this problem promptly to prevent further damage to the vehicle.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level10.0 (Out of 10)

When the engine light is on or the service engine soon warning light is illuminated, it could be a sign of the p1875 fault code.

  • The symptoms of the automobile fault code P1875 include the Engine Light being ON or the Service Engine Soon Warning Light being illuminated.

The automobile fault code p1875 can be caused by a faulty 4WD Low Switch, an open or shorted 4WD Low Switch harness, or a poor electrical connection in the 4WD Low Switch circuit.

  • The fault code P1875 can be caused by the following: a faulty 4WD Low Switch, an open or shorted 4WD Low Switch harness, and a poor electrical connection in the 4WD Low Switch circuit.

To fix the p1875 fault code, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code P1875, follow these steps: 1.
  • Check the possible causes mentioned above.
  • 2.
  • Visually inspect the wiring harness and connectors related to the fault code.
  • 3.
  • Look for any damaged components.
  • 4.
  • Check for broken, bent, pushed out, or corroded pins in the connectors.
  • The estimated repair time for this fix is 1.0 hour.

The factors influencing the cost of diagnosing and fixing the automobile fault code P1875 are the estimated repair time of 1.0 hour and the typical auto repair shop charges of $75 to $150 per hour.

The P1875 fault code refers to an issue with the 4WD Low switch circuit electrical system in your vehicle. This code is triggered when certain conditions are met, including the engine speed being over 450 rpm for 5 seconds, the fuel cutoff not being active, and the vehicle speed sensor input being over engine vacuum at 0-105 kPa. Additionally, the gear range should be in D4, the shift solenoid performance counters should be at zero, and the transmission fluid temperature input should be between 68-266°F. Condition 1 for the P1875 code occurs when the 4WD Low switch is in 4WD low, but the transfer case is not in 4WD low.

The torque converter clutch (TCC) slip speed should be between -3000 to -50 RPM, and the VCM (Vehicle Control Module) detects that the speed ratio is 0.8-1.2 (speed ratio is rpm divided by the output speed). Condition 2 for the P1875 code occurs when the 4WD Low switch is not in 4WD low, but the transfer case is in 4WD low. The TCC is commanded on, and the TCC slip speed should be between 100 to 3000 RPM.

The VCM detects that the speed ratio is 2.5-2.9 for 10 seconds. If you are experiencing this fault code, it indicates an electrical issue with the 4WD Low switch circuit in your vehicle. It is recommended to have a professional mechanic diagnose and repair the problem to ensure proper functionality of your vehicle’s 4WD system.

What are the possible causes for the automobile fault code P1875?

If you see the engine light or service engine soon warning light on, the fault code P1875 could be the culprit. This code is often caused by a faulty 4WD Low Switch or issues with the switch’s harness and circuit connection. To fix the problem, start by visually inspecting the wiring harness and connectors. Look for any signs of damage or corrosion. Additionally, check for broken, bent, or pushed out connector pins. Taking these steps can help you identify and resolve the issue.

How can I visually inspect the wiring harness and connectors to fix the P1875 fault code?

To fix the P1875 fault code, start by visually inspecting the wiring harness and connectors. Look for any damaged components and check if there are any broken, bent, pushed out, or corroded pins in the connectors. This can help identify any issues with the 4WD Low Switch or its circuit. Don’t forget to check the “Possible Causes” mentioned above for a comprehensive solution.

What should I look for when checking for damaged components and connector’s pins to resolve the P1875 fault code?

When resolving the P1875 fault code, start by checking for damaged components and connector’s pins. This can be done by visually inspecting the related wiring harness and connectors. Look for any signs of damage such as broken, bent, pushed out, or corroded pins. By doing this, you can identify any issues with the 4WD Low Switch or its circuitry, which may be causing the engine light to turn on.

p1875 error fault code explained

If you see the Engine Light ON or the Service Engine Soon Warning Light, the possible cause could be a faulty 4WD Low Switch or an issue with the wiring harness or connectors. To fix it, visually inspect the wiring harness and connectors for any damage or corrosion. Check for broken or bent pins on the connectors.

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