P2771 2015 Chevrolet Silverado Code - Four Wheel Drive Low Switch Circuit
Quick Answer
For vehicles equipped with an active transfer case, the four-wheel drive (4WD) low circuit consists of the Powertrain Control Module (PCM), a transfer case control module, and the circuit wiring. Common causes include Faulty Transfer Case Shift Control Switch, Transfer Case Shift Control Switch harness is open or shorted, Transfer Case Shift Control 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
- P2771 2015 Chevrolet Silverado indicates Four Wheel Drive Low Switch Circuit.
- Common causes
- Common causes include Faulty Transfer Case Shift Control Switch, Transfer Case Shift Control Switch harness is open or shorted, Transfer Case Shift Control 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.
Code P2771 2015 Chevrolet Silverado Description
For vehicles not equipped with an active transfer case, the 4WD low circuit consists of the PCM, a transfer case switch, and the circuit wiring. The transfer case switch controls the 4WD low signal on the signal circuit. When the operator selects 4WD low, the transfer case switch closes, and the 4WD low signal voltage on the signal circuit changes from ignition voltage to zero volts. The PCM then compensates for transfer case gear reduction in the transmission output shaft speed (OSS) sensor signal. The PCM uses the transmission OSS sensor signal to adjust shift points, line pressure, and TCC scheduling.
What are the Possible Causes of the DTC P2771 2015 Chevrolet Silverado?
- Faulty Transfer Case Shift Control Switch
- Transfer Case Shift Control Switch harness is open or shorted
- Transfer Case Shift Control Switch circuit poor electrical connection
How to Fix the DTC P2771 2015 Chevrolet Silverado?
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 P2771 2015 Chevrolet Silverado 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 P2771 2015 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code P2771 in a 2015 Chevrolet Silverado?
- Common symptoms include difficulty engaging four-wheel drive low mode, illuminated warning lights on the dashboard, and issues with the four-wheel drive system.
2. What does the OBDII code P2771 indicate in a 2015 Chevrolet Silverado?
- The code P2771 indicates a problem with the Four Wheel Drive Low Switch Circuit in the vehicle.
3. What are the possible causes of OBDII code P2771 in a 2015 Chevrolet Silverado?
- Possible causes include a faulty four-wheel drive low switch, damaged wiring or connectors in the circuit, or a malfunctioning transfer case control module.
4. How can I diagnose the Four Wheel Drive Low Switch Circuit issue triggering code P2771 in my 2015 Chevrolet Silverado?
- Diagnosis involves checking the condition of the four-wheel drive low switch, inspecting the wiring and connections for any damage, and using a diagnostic scanner to read the trouble codes and identify the specific issue.
5. Can I continue driving my 2015 Chevrolet Silverado with OBDII code P2771 active?
- It is not recommended to drive the vehicle with the code P2771 active, as it can lead to further damage to the four-wheel drive system and compromise its functionality.
6. How can I repair OBDII code P2771 in my 2015 Chevrolet Silverado?
- Repair options include replacing the faulty four-wheel drive low switch, repairing or replacing damaged wiring and connectors, and resetting the trouble codes using a diagnostic scanner.
7. Is it possible to clear OBDII code P2771 in a 2015 Chevrolet Silverado without fixing the underlying issue?
- While it is possible to clear the code temporarily, it is crucial to address the root cause of the problem to prevent the code from reoccurring and ensure the proper functioning of the four-wheel drive system.
8. Can extreme weather conditions trigger OBDII code P2771 in a 2015 Chevrolet Silverado?
- Extreme weather conditions, such as moisture or extreme cold, can potentially affect the Four Wheel Drive Low Switch Circuit and trigger code P2771 in the vehicle.
9. How much does it typically cost to repair OBDII code P2771 in a 2015 Chevrolet Silverado?
- The cost of repairing P2771 can vary depending on the root cause of the issue, but it may involve parts and labor costs ranging from $200 to $500 or more, depending on the extent of the repairs needed.
10. Will fixing OBDII code P2771 impact the overall performance of my 2015 Chevrolet Silverado?
- Fixing code P2771 and ensuring the proper functioning of the Four Wheel Drive Low Switch Circuit will help maintain the optimal performance and safety of the four-wheel drive system in your Chevrolet Silverado.
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