AutoCodes – Generic – B2725:07

B2725:07 Code - Transfer Case Range Selection Switch Circuit High Voltage

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: B2725:07 indicates Transfer Case Range Selection Switch Circuit High Voltage.
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 299

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 30, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B2725:07 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 greater than 4.65 volts on the Four Wheel Drive Switch Signal circuit.

OBDII Code B2725:07 - Transfer Case Range Selection Switch Circuit High Voltage - AutoCodes.com — B2725:07 Code - Transfer Case Range Selection Switch Circuit High Voltage

What does this mean?

What are the Possible Causes of the DTC B2725:07?

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 B2725:07?

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.

What does this mean?

Code Tech Notes

B2725:03 Transfer Case Range Selection Switch Circuit Low Voltage
B2725:07 Transfer Case Range Selection Switch Circuit High Voltage
B2725:08 Transfer Case Range Selection Switch Circuit Performance Signal Invalid

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2725:07 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.

Frequently Asked Questions about B2725:07 Code

1. What does the OBDII code B2725:07 mean?

B2725:07 indicates a "Transfer Case Range Selection Switch Circuit High Voltage," meaning the voltage in the transfer case range switch circuit is higher than expected.

2. What are the common symptoms of code B2725:07?

Symptoms may include a Service 4WD light on the dashboard, failure to shift into or out of 4WD, or unusual noises from the transfer case.

3. What causes the B2725:07 code to appear?

Common causes include a faulty transfer case range selection switch, damaged wiring or connectors, or an issue with the transfer case control module.

4. Can a bad transfer case motor cause the B2725:07 code?

While unlikely, a malfunctioning transfer case motor could indirectly contribute to the code if it interferes with the range selection process.

5. How do you diagnose the B2725:07 code?

Diagnosis involves visually inspecting the wiring and connectors, testing the range selection switch for proper operation, and using a multimeter to check circuit voltage.

6. Can I drive my vehicle with the B2725:07 code?

Driving may still be possible, but you may experience limited or no 4WD functionality, which could be problematic in certain driving conditions.

7. How do I fix the B2725:07 code?

Repairs may include replacing the range selection switch, repairing damaged wiring or connectors, or reprogramming the transfer case control module if necessary.

8. Is the B2725:07 code specific to certain vehicles?

This code is commonly associated with 4WD-equipped GM vehicles but may apply to other makes and models with a similar transfer case system.

9. How much does it cost to fix the B2725:07 code?

Costs vary based on the specific issue, but replacing the range selection switch typically costs $150â€“$300, including parts and labor.

10. Can a software update resolve the B2725:07 code?

In some cases, a software update for the transfer case control module may resolve the issue, but this depends on the vehicle and its specific problem.