P185F 2015 Chevrolet Silverado Code - Transfer Case Shift Pending Signal Not Plausible
Quick Answer
The Engine Control Module (ECM) uses the following two ways to determine if the transfer case is in 4WD Low, 4WD High, or Neutral. Common causes include Reprogram Engine Control Module (ECM), Faulty Engine Control Module, Engine Control Module harness is open or shorted. 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
- P185F 2015 Chevrolet Silverado indicates Transfer Case Shift Pending Signal Not Plausible.
- Common causes
- Common causes include Reprogram Engine Control Module (ECM), Faulty Engine Control Module, Engine Control Module harness is open or shorted.
- 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 P185F 2015 Chevrolet Silverado Description
1. The first way is to compare the transmission output speed sensor to the transfer case output speed sensor in order to calculate the transfer case range.
2. The second way is to use a LAN message sent by the transfer case shift control module to the ECM.
The ECM uses this message to determine motor torque required and transmission shifting.
The internal fault detection is handled inside the control module. No external circuit diagnosis is involved.
If the first way and second way of determining transfer case range do not match while in 4WD Low, 4WD High or Neutral, then the Diagnostic Trouble Code (DTC) is set.
What are the Possible Causes of the DTC P185F 2015 Chevrolet Silverado?
- Reprogram Engine Control Module (ECM)
- Faulty Engine Control Module
- Engine Control Module harness is open or shorted
- Engine Control Module circuit poor electrical connection
- Transmission internal mechanical problems
How to Fix the DTC P185F 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 P185F 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.
Need more information about the P185F 2015 Chevrolet Silverado code?
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Frequently Asked Questions about P185F 2015 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code P185F in a 2015 Chevrolet Silverado?
- Common symptoms include difficulty shifting gears, illuminated warning lights on the dashboard, and the vehicle getting stuck in a particular gear.
2. What does the OBDII code P185F "Transfer Case Shift Pending Signal Not Plausible" indicate in a 2015 Chevrolet Silverado?
- This code indicates that there is an issue with the transfer case shift system, specifically that the signal for the shift is not aligning with the expected parameters.
3. What are some possible causes of OBDII code P185F in a 2015 Chevrolet Silverado?
- Possible causes include faulty transfer case shift motor, damaged wiring or connectors, low transfer case fluid level, or a malfunctioning transfer case control module.
4. How can I diagnose the OBDII code P185F in my 2015 Chevrolet Silverado?
- Diagnosis typically involves checking the transfer case shift motor, inspecting the wiring and connectors for damage, verifying the transfer case fluid level, and scanning the transfer case control module for any fault codes.
5. Is it safe to continue driving my 2015 Chevrolet Silverado with OBDII code P185F present?
- It is not recommended to continue driving the vehicle with this code present, as it can lead to potential issues with shifting gears and affect the overall drivability of the vehicle.
6. Can I reset the OBDII code P185F in my 2015 Chevrolet Silverado on my own?
- While you can attempt to clear the code using an OBDII scanner, it is important to address the underlying issue causing the code to prevent it from reoccurring.
7. How much does it typically cost to repair OBDII code P185F in a 2015 Chevrolet Silverado?
- The cost of repair can vary depending on the specific cause of the code, but it may involve replacing the transfer case shift motor, repairing damaged wiring, or reprogramming the transfer case control module.
8. Are there any DIY tips for fixing OBDII code P185F in a 2015 Chevrolet Silverado?
- DIY tips may include checking for loose or damaged wiring, ensuring the transfer case fluid level is adequate, and inspecting the transfer case shift motor for any visible issues before seeking professional help.
9. How urgent is it to address OBDII code P185F in a 2015 Chevrolet Silverado?
- It is advisable to address this code promptly to prevent further damage to the transfer case system and ensure the safe operation of the vehicle.
10. Can extreme weather conditions contribute to triggering OBDII code P185F in a 2015 Chevrolet Silverado?
- Extreme cold or hot weather conditions can sometimes affect the transfer case shift system, potentially leading to issues that trigger the P185F code.
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