AutoCodes – Generic – B2725:08

B2725:08 Code - Transfer Case Range Selection Switch Circuit Performance – Signal Invalid

Quick Answer

The Transfer Case Shift Control Switch (TCSCS) allows the driver to select between ranges. Common causes include Faulty Transfer Case Range Selection Switch, Transfer Case Range Selection Switch harness is open or shorted, Transfer Case Range Selection Switch circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
B2725:08 indicates Transfer Case Range Selection Switch Circuit Performance – Signal Invalid.
Common causes
Common causes include Faulty Transfer Case Range Selection Switch, Transfer Case Range Selection Switch harness is open or shorted, Transfer Case Range Selection Switch circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code Popularity 613
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 30, 2023
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Code B2725:08 Description

The Transfer Case Shift Control Switch (TCSCS) allows the driver to select between ranges. The Transfer Case Control Module (TCCM) supplies a regulated 5 V, to the switch through the 5-volt reference circuit. The current travels through the specific resistor of the currently selected mode, each mode has its own resistor. The current is then returned to the Transfer Case Control Module through the switch signal circuit. The Transfer Case Control Module continuously monitors the switch signal circuit to determine whether the driver has requested a mode change. The Diagnostic Trouble Code (DTC) sets the low side driver is ON, the transfer case control module measures an invalid voltage on the Four Wheel Drive Switch Signal circuit.
OBDII Code B2725:08 - Transfer Case Range Selection Switch Circuit Performance – Signal Invalid - AutoCodes.com
B2725:08 Code - Transfer Case Range Selection Switch Circuit Performance – Signal Invalid

What are the Possible Causes of the DTC B2725:08?

  • Faulty Transfer Case Range Selection Switch
  • Transfer Case Range Selection Switch harness is open or shorted
  • Transfer Case Range Selection Switch circuit poor electrical connection
  • Faulty Transfer Case Control Module

How to Fix the DTC B2725:08?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2725:08 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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