P0990 2016 Chevrolet Silverado Code - Transmission Fluid Pressure Switch 5 Circuit High Voltage
Quick Answer
The P0990 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates a problem with the Transmission Fluid Pressure Switch 5 Circuit High Voltage. Common causes include Faulty transmission fluid pressure switch 5, Wiring issues or shorts in the circuit, PCM malfunction. 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 2016 Chevrolet Silverado indicates Transmission Fluid Pressure Switch 5 Circuit High Voltage.
- Common causes
- Common causes include Faulty transmission fluid pressure switch 5, Wiring issues or shorts in the circuit, PCM malfunction.
- 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 2016 Chevrolet Silverado Description
The P0990 diagnostic trouble code (DTC) for a 2016 Chevrolet Silverado indicates a problem with the Transmission Fluid Pressure Switch 5 Circuit High Voltage. This code is set when the powertrain control module (PCM) detects that the voltage signal from the transmission fluid pressure switch 5 is higher than the specified range. The transmission fluid pressure switch is a crucial component that helps monitor and regulate the hydraulic pressure within the transmission.
Common Causes of P0990 2016 Chevrolet Silverado
- Faulty transmission fluid pressure switch 5
- Wiring issues or shorts in the circuit
- PCM malfunction
- Low transmission fluid levels
- Contaminated or degraded transmission fluid
Symptoms of P0990 2016 Chevrolet Silverado
- Erratic or harsh shifting of the transmission
- Transmission slipping or not engaging properly
- Reduced fuel efficiency
- Illumination of the Check Engine Light
- Transmission overheating
How to Fix P0990 2016 Chevrolet Silverado
- Begin by diagnosing the specific cause of the high voltage reading using a scan tool to retrieve the DTC and perform a thorough inspection of the transmission fluid pressure switch 5 and related wiring.
- Replace the faulty transmission fluid pressure switch 5 if it is determined to be the root cause of the issue.
- Repair any damaged or corroded wiring in the circuit and ensure proper connections.
- Clear the DTC from the PCM memory and test drive the vehicle to verify that the issue has been resolved.
- Perform a transmission fluid flush and refill if necessary, ensuring the correct fluid level and type are used.
Cost to Fix P0990 2016 Chevrolet Silverado
The typical repair costs for addressing a P0990 code on a 2016 Chevrolet Silverado can range from $200 to $500, including parts and labor. However, it is essential to note that specific diagnosis time and labor rates at auto repair shops can vary significantly 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, but rates may be higher in metropolitan areas or at dealerships, while independent shops may offer lower rates. It is advisable to obtain quotes from local shops for a more accurate estimate.
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