B0790 Buick Code - Transfer Case Neutral Indicator Circuit
Quick Answer
The Neutral indicator circuit consists of a Light Emitting Diode (LED) feed circuit, an LED, and an LED control circuit. Common causes include Faulty Transfer Case Select Switch, Transfer Case Select Switch harness is open or shorted, Transfer Case Select Switch circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- B0790 Buick indicates Transfer Case Neutral Indicator Circuit.
- Common causes
- Common causes include Faulty Transfer Case Select Switch, Transfer Case Select Switch harness is open or shorted, Transfer Case Select Switch circuit poor electrical connection.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code B0790 Buick Description
The TCCM tests the Neutral indicator circuit for unexpected voltage by monitoring the B+ supplied by the BCM on the Ignition 1 voltage circuit by grounding the Neutral indicator control circuit for 2 seconds during the Bulb Test at key ON.
What are the Possible Causes of the DTC B0790 Buick?
- Faulty Transfer Case Select Switch
- Transfer Case Select Switch harness is open or shorted
- Transfer Case Select Switch circuit poor electrical connection
- Faulty Transfer Case Shift Control Module (TCCM)
How to Fix the DTC B0790 Buick?
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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B0790 Buick 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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Frequently Asked Questions about B0790 Buick Code
1. What are the common symptoms of OBDII code B0790 in a Buick related to the Transfer Case Neutral Indicator Circuit?
- The common symptoms include the transfer case neutral indicator not functioning properly, illuminated warning lights on the dashboard, and issues with shifting gears.
2. What are some possible causes of the OBDII code B0790 in a Buick?
- The code B0790 in a Buick can be caused by a faulty transfer case neutral indicator switch, damaged wiring or connectors in the circuit, or a malfunctioning transfer case control module.
3. How can I diagnose the OBDII code B0790 related to the Transfer Case Neutral Indicator Circuit in my Buick?
- Diagnosing the code B0790 involves using a diagnostic scanner to read the fault codes, inspecting the wiring and connectors for any damage, and testing the transfer case neutral indicator switch for proper functionality.
4. Can I drive my Buick with the OBDII code B0790 present?
- It is not recommended to drive your Buick with the OBDII code B0790 present, as it can lead to potential issues with the transfer case operation and affect the vehicle's drivability.
5. What repairs are typically needed to fix the OBDII code B0790 in a Buick?
- Repairing the OBDII code B0790 may involve replacing the transfer case neutral indicator switch, repairing or replacing damaged wiring or connectors, or recalibrating the transfer case control module.
6. Is it possible to reset the OBDII code B0790 in a Buick without fixing the underlying issue?
- While you can clear the code temporarily, it will likely return until the root cause of the problem related to the Transfer Case Neutral Indicator Circuit is addressed.
7. How much does it cost to repair the OBDII code B0790 in a Buick at a dealership or repair shop?
- The cost of repairing the OBDII code B0790 can vary depending on the exact cause of the issue, but it may range from $200 to $500 at a dealership or repair shop.
8. Can a DIY enthusiast fix the OBDII code B0790 in a Buick at home?
- DIY enthusiasts with automotive repair experience and the necessary tools can attempt to fix the OBDII code B0790 at home by following repair guides and using proper diagnostic equipment.
9. Will the OBDII code B0790 cause my Buick to fail an emissions test?
- The OBDII code B0790 related to the Transfer Case Neutral Indicator Circuit is not directly related to emissions, so it should not cause your Buick to fail an emissions test.
10. How important is it to address the OBDII code B0790 promptly in a Buick?
- It is important to address the OBDII code B0790 promptly in a Buick to prevent potential issues with the transfer case operation, ensure safe driving conditions, and avoid further damage to the vehicle.
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