P0842 2016 GMC Sierra Code - Transmission Fluid Pressure Switch 1 Circuit Low Voltage
Quick Answer
The P0842 diagnostic trouble code (DTC) for a 2016 GMC Sierra relates to the Transmission Fluid Pressure Switch 1 Circuit Low Voltage. Common causes include Faulty transmission fluid pressure switch, Damaged wiring or connectors in the circuit, Low transmission fluid levels. 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
- P0842 2016 GMC Sierra indicates Transmission Fluid Pressure Switch 1 Circuit Low Voltage.
- Common causes
- Common causes include Faulty transmission fluid pressure switch, Damaged wiring or connectors in the circuit, Low transmission fluid levels.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P0842 2016 GMC Sierra Description
The P0842 diagnostic trouble code (DTC) for a 2016 GMC Sierra relates to the Transmission Fluid Pressure Switch 1 Circuit Low Voltage. This code indicates that there is an issue with the transmission fluid pressure switch, specifically that the voltage in the circuit is lower than the expected range. The transmission fluid pressure switch plays a crucial role in monitoring and regulating the hydraulic pressure within the transmission system. When the voltage is too low, it can lead to improper shifting, reduced fuel efficiency, and potential damage to the transmission components.
Common Causes of P0842 2016 GMC Sierra
- Faulty transmission fluid pressure switch
- Damaged wiring or connectors in the circuit
- Low transmission fluid levels
- Malfunctioning transmission control module
- Electrical issues such as a blown fuse or short circuit
Symptoms of P0842 2016 GMC Sierra
- Erratic shifting patterns
- Harsh engagements when shifting gears
- Transmission slipping
- Reduced fuel efficiency
- Illumination of the Check Engine Light
How to Fix P0842 2016 GMC Sierra
- Begin by performing a thorough inspection of the transmission fluid pressure switch, wiring, and connectors to identify any visible damage or issues.
- Check the transmission fluid level and quality to ensure it meets the manufacturer's specifications. Top up or replace the fluid if necessary.
- Use a multimeter to test the voltage in the circuit and determine if it falls below the expected range. Replace the transmission fluid pressure switch if it is faulty.
- Inspect the transmission control module for any signs of damage or malfunction. Replace or reprogram the module as needed.
- Clear the DTC from the vehicle's computer memory using a diagnostic scan tool and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P0842 2016 GMC Sierra
The typical repair costs for addressing a P0842 code on a 2016 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing a faulty transmission fluid pressure switch can cost between $150 and $300, including parts and labor. If additional repairs or replacements are needed for components such as wiring, connectors, or the transmission control module, the total cost could increase accordingly. It is advisable to consult with a qualified mechanic or auto repair shop to obtain a more accurate estimate based on the specific circumstances of the vehicle. Labor rates at auto repair shops typically range from $80 to $150 per hour, but may vary based on location and other factors.
Need more information about the P0842 2016 GMC Sierra code?
Need more information on how to fix the P0842 2016 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P0842 2016 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P0842 2016 GMC Sierra Code
No Frequently Asked Questions about P0842 2016 GMC Sierra Code found.
Discuss the causes and fixes for P0842 2016 GMC Sierra OBDII Code
Code P0842 2016 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.