P0847 2018 GMC Sierra Code - Transmission Fluid Pressure Switch 2 Circuit Low Voltage
Quick Answer
The P0847 diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates a problem with the Transmission Fluid Pressure Switch 2 Circuit, specifically a low voltage issue. Common causes include Faulty transmission fluid pressure switch, Damaged wiring or connectors in the circuit, Short circuit in the circuit. 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
- P0847 2018 GMC Sierra indicates Transmission Fluid Pressure Switch 2 Circuit Low Voltage.
- Common causes
- Common causes include Faulty transmission fluid pressure switch, Damaged wiring or connectors in the circuit, Short circuit in the circuit.
- 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.
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Code P0847 2018 GMC Sierra Description
The P0847 diagnostic trouble code (DTC) for a 2018 GMC Sierra indicates a problem with the Transmission Fluid Pressure Switch 2 Circuit, specifically a low voltage issue. The transmission fluid pressure switch is a crucial component that monitors the hydraulic pressure within the transmission. This switch helps the vehicle's computer system to determine the appropriate gear shift points and ensure smooth operation of the transmission.
Common Causes of P0847 2018 GMC Sierra
- Faulty transmission fluid pressure switch
- Damaged wiring or connectors in the circuit
- Short circuit in the circuit
- Malfunctioning transmission control module
- Low transmission fluid level or dirty transmission fluid
Symptoms of P0847 2018 GMC Sierra
- Erratic shifting behavior
- Harsh gear changes
- Slipping gears
- Transmission overheating
- Illumination of the Check Engine Light
How to Fix P0847 2018 GMC Sierra
- Begin by conducting a thorough inspection of the wiring and connectors in the Transmission Fluid Pressure Switch 2 Circuit.
- Test the pressure switch to determine if it is functioning correctly or needs replacement.
- Check the transmission fluid level and condition, topping off or replacing as necessary.
- Scan the vehicle's computer system to clear the DTC and reset the transmission adaptations.
- If the issue persists, consider replacing the pressure switch or consulting a professional technician for further diagnosis and repair.
Cost to Fix P0847 2018 GMC Sierra
The typical repair costs for addressing a P0847 code in a 2018 GMC Sierra can vary depending on the specific cause of the issue. Generally, replacing a faulty transmission fluid pressure switch can cost between $150 to $300, including parts and labor. Additional costs may apply if there are wiring or connector issues that need to be repaired. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate.
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