P0990 2017 Chevrolet Silverado Code - Transmission Fluid Pressure Switch 5 Circuit High Voltage
Quick Answer
The P0990 diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado indicates a problem with the Transmission Fluid Pressure Switch 5 Circuit High Voltage. Common causes include Faulty transmission fluid pressure switch, Damaged wiring or connectors in circuit 5, 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
- P0990 2017 Chevrolet Silverado indicates Transmission Fluid Pressure Switch 5 Circuit High Voltage.
- Common causes
- Common causes include Faulty transmission fluid pressure switch, Damaged wiring or connectors in circuit 5, 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.
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Code P0990 2017 Chevrolet Silverado Description
The P0990 diagnostic trouble code (DTC) for a 2017 Chevrolet Silverado indicates a problem with the Transmission Fluid Pressure Switch 5 Circuit High Voltage. This code is specifically related to the transmission system of the vehicle. The transmission fluid pressure switch is responsible for monitoring the hydraulic pressure within the transmission. When the switch detects a high voltage signal in circuit 5, it means that there is an issue with the transmission fluid pressure regulation.
Common Causes of P0990 2017 Chevrolet Silverado
- Faulty transmission fluid pressure switch
- Damaged wiring or connectors in circuit 5
- Low transmission fluid levels
- Malfunctioning transmission control module
- Electrical issues within the transmission system
Symptoms of P0990 2017 Chevrolet Silverado
- Harsh shifting
- Slipping transmission
- Delayed engagement
- Transmission failure to operate
- Illuminated check engine light
How to Fix P0990 2017 Chevrolet Silverado
- Begin by diagnosing the specific cause of the high voltage signal in circuit 5 using a diagnostic scanner.
- Inspect the transmission fluid pressure switch and replace it if found to be faulty.
- Check the wiring and connectors in circuit 5 for any damage or corrosion, repairing or replacing as necessary.
- Verify the transmission fluid levels and top up if low, ensuring it is at the correct level.
- If the issue persists, further diagnostic testing may be required to identify any underlying electrical problems within the transmission system.
Cost to Fix P0990 2017 Chevrolet Silverado
The typical repair costs for addressing a P0990 code on a 2017 Chevrolet Silverado can range from $200 to $500, including parts and labor. However, it is important to note that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour for labor, with rates potentially higher in metropolitan areas or at dealerships, and lower at independent shops. It is recommended to obtain quotes from local shops for a more accurate estimate.
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Frequently Asked Questions about P0990 2017 Chevrolet Silverado Code
What does the OBD-II code P0990 mean for a 2017 Chevrolet Silverado?
The P0990 code indicates a high voltage issue in the Transmission Fluid Pressure Switch 5 circuit, which helps monitor and regulate transmission fluid pressure.
What are the symptoms of the P0990 code in a 2017 Chevrolet Silverado?
Common symptoms include erratic shifting, transmission slipping, reduced fuel efficiency, and the check engine light turning on.
What causes the P0990 code in a 2017 Chevrolet Silverado?
Possible causes include a faulty transmission fluid pressure switch, damaged wiring or connectors in the circuit, low transmission fluid, or issues with the transmission control module (TCM).
Can driving with the P0990 code damage my 2017 Chevrolet Silverado?
Yes, driving with this code can lead to transmission damage or unsafe driving conditions due to improper gear shifting.
How is the P0990 code diagnosed on a 2017 Chevrolet Silverado?
A mechanic will use a diagnostic scanner to read the code, inspect the transmission fluid pressure switch, check the wiring and connectors, and test the TCM for faults.
What repairs can fix the P0990 code in a 2017 Chevrolet Silverado?
Repairs may include replacing the transmission fluid pressure switch, repairing or replacing damaged wiring, adding or replacing transmission fluid, or reprogramming/replacing the TCM.
How much does it cost to fix the P0990 code on a 2017 Chevrolet Silverado?
Repair costs can vary but typically range from $150 to $400, depending on the exact issue and labor rates in your area.
Can low transmission fluid cause the P0990 code in a 2017 Chevrolet Silverado?
Yes, low transmission fluid can lead to improper pressure readings, resulting in the P0990 code.
How do I prevent the P0990 code from appearing on my 2017 Chevrolet Silverado?
Regular maintenance, such as checking transmission fluid levels and inspecting wiring, can help prevent this code from appearing.
Is the P0990 code related to other transmission codes on a 2017 Chevrolet Silverado?
Yes, it may be related to other transmission pressure switch or circuit codes, as they often share components and systems.
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