P1838 2014 Chevrolet Silverado Code - Internal Mode Switch 'A' Circuit High Voltage
Quick Answer
The internal mode switch indicates the Transmission Control Module (TCM) which gear position the vehicle operator has selected. Common causes include Faulty Transmission Internal Mode Switch, Transmission Internal Mode Switch harness is open or shorted, Transmission Internal Mode 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
- P1838 2014 Chevrolet Silverado indicates Internal Mode Switch 'A' Circuit High Voltage.
- Common causes
- Common causes include Faulty Transmission Internal Mode Switch, Transmission Internal Mode Switch harness is open or shorted, Transmission Internal Mode 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 P1838 2014 Chevrolet Silverado Description
What are the Possible Causes of the DTC P1838 2014 Chevrolet Silverado?
- Faulty Transmission Internal Mode Switch
- Transmission Internal Mode Switch harness is open or shorted
- Transmission Internal Mode Switch circuit poor electrical connection
- Faulty Transmission Control Module (TCM)
How to Fix the DTC P1838 2014 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 P1838 2014 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 P1838 2014 Chevrolet Silverado code?
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Frequently Asked Questions about P1838 2014 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code P1838 in a 2014 Chevrolet Silverado?
- Common symptoms include difficulty shifting gears, erratic shifting behavior, and the transmission not responding properly.
2. What does the OBDII code P1838 'Internal Mode Switch' A Circuit High Voltage mean for a 2014 Chevrolet Silverado?
- This code indicates that there is a high voltage condition detected in the Internal Mode Switch 'A' circuit.
3. What are the possible causes of OBDII code P1838 in a 2014 Chevrolet Silverado?
- Possible causes include a faulty internal mode switch, damaged wiring or connectors in the circuit, or a problem with the transmission control module.
4. How can I diagnose the OBDII code P1838 in my 2014 Chevrolet Silverado?
- Diagnosis involves using a scan tool to check for the code, inspecting the internal mode switch and related wiring, and testing the transmission control module.
5. Can I still drive my 2014 Chevrolet Silverado with OBDII code P1838?
- It is not recommended to drive the vehicle with this code as it can lead to further transmission issues and potential safety hazards.
6. How can I repair OBDII code P1838 in my 2014 Chevrolet Silverado?
- Repairing this code may involve replacing the internal mode switch, repairing any damaged wiring or connectors, or reprogramming the transmission control module.
7. Is it possible to reset the OBDII code P1838 in a 2014 Chevrolet Silverado without fixing the underlying issue?
- While you can clear the code with a scan tool, it is crucial to address the root cause of the problem to prevent it from reoccurring.
8. Are there any DIY tips for resolving OBDII code P1838 in a 2014 Chevrolet Silverado?
- DIY tips may include checking and cleaning the connectors, ensuring proper grounding, and inspecting the internal mode switch for any signs of damage.
9. What should I do if the OBDII code P1838 keeps coming back in my 2014 Chevrolet Silverado after repairs?
- If the code persists after repairs, it may indicate a deeper issue that requires further diagnosis by a professional mechanic or dealership.
10. How much can I expect to pay for repairing OBDII code P1838 in a 2014 Chevrolet Silverado?
- The cost of repairs can vary depending on the exact cause of the code, but it is advisable to budget for diagnostic fees, parts, and labor costs.
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