P0990 2015 Chevrolet Silverado Code - Transmission Fluid Pressure Switch 5 Circuit High Voltage
Quick Answer
The P0990 diagnostic trouble code (DTC) specifically pertains to the transmission fluid pressure switch 5 circuit registering a high voltage. Common causes include Faulty transmission fluid pressure switch 5, Wiring or connector issues 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
- P0990 2015 Chevrolet Silverado indicates Transmission Fluid Pressure Switch 5 Circuit High Voltage.
- Common causes
- Common causes include Faulty transmission fluid pressure switch 5, Wiring or connector issues 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.
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Code P0990 2015 Chevrolet Silverado Description
The P0990 diagnostic trouble code (DTC) specifically pertains to the transmission fluid pressure switch 5 circuit registering a high voltage. In simpler terms, it means that the transmission control module (TCM) has detected an abnormal voltage level in the circuit related to the transmission fluid pressure switch 5. This switch is responsible for monitoring and regulating the hydraulic pressure within the transmission system.
Common Causes of P0990 2015 Chevrolet Silverado
- Faulty transmission fluid pressure switch 5
- Wiring or connector issues in the circuit
- Low transmission fluid levels
- Contaminated transmission fluid
- Malfunctioning TCM
Symptoms of P0990 2015 Chevrolet Silverado
- Erratic shifting behavior
- Delayed gear engagement
- Harsh shifting
- Transmission slippage
- Illumination of the check engine light
How to Fix P0990 2015 Chevrolet Silverado
- Diagnose the issue by using a scan tool to retrieve the DTC and perform a visual inspection of the transmission fluid pressure switch 5 and its wiring.
- Check the transmission fluid level and condition to ensure it meets the manufacturer's specifications.
- Test the transmission fluid pressure switch 5 using a multimeter to determine if it is functioning correctly.
- Replace the transmission fluid pressure switch 5 if it is found to be faulty, and repair any damaged wiring or connectors in the circuit.
- Clear the DTC and test drive the vehicle to verify that the issue has been resolved.
Cost to Fix P0990 2015 Chevrolet Silverado
The typical repair costs for addressing a P0990 code may range from $200 to $500, depending on the specific components that need to be replaced and the labor involved. This estimate includes the cost of the transmission fluid pressure switch 5, any necessary wiring or connectors, and the labor fees charged by the auto repair shop. It is important to note that diagnosis time and labor rates can vary, so it is advisable to obtain a detailed quote from a local auto repair shop before proceeding with the repairs.
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Frequently Asked Questions about P0990 2015 Chevrolet Silverado Code
1. What does the OBDII code P0990 mean on a 2015 Chevrolet Silverado?
P0990 indicates a high voltage issue in the Transmission Fluid Pressure Switch 5 Circuit, which is responsible for monitoring hydraulic pressure in the transmission.
2. What are the common symptoms of a P0990 code in a 2015 Chevrolet Silverado?
Symptoms may include erratic shifting, the transmission stuck in one gear, reduced fuel efficiency, or the check engine light illuminating.
3. What causes the P0990 code on a 2015 Chevrolet Silverado?
Common causes include a faulty transmission fluid pressure switch, damaged wiring or connectors in the circuit, or a malfunctioning transmission control module (TCM).
4. Can driving with the P0990 code damage my 2015 Chevrolet Silverado?
Yes, continuing to drive with this code can lead to transmission issues, poor performance, or further damage to the transmission system.
5. How do I diagnose the P0990 code on my 2015 Chevrolet Silverado?
Diagnose the code by inspecting the wiring and connectors for damage, testing the transmission fluid pressure switch, and using a scan tool to monitor live data from the TCM.
6. What repairs are typically required for a P0990 code?
Repairs may include replacing the transmission fluid pressure switch, repairing damaged wiring or connectors, or reprogramming or replacing the TCM if necessary.
7. How much does it cost to fix a P0990 code on a 2015 Chevrolet Silverado?
Costs vary depending on the repair, but replacing a transmission fluid pressure switch typically ranges from $150 to $300, including parts and labor.
8. Can low or dirty transmission fluid cause the P0990 code?
While not a direct cause, low or dirty transmission fluid can contribute to transmission performance issues, so it’s important to check and maintain proper fluid levels.
9. Do I need special tools to fix the P0990 code on a 2015 Chevrolet Silverado?
Yes, diagnosing and repairing this code may require a scan tool capable of reading transmission data, as well as a multimeter for testing electrical components.
10. Can a P0990 code be cleared without fixing the problem?
Clearing the code without fixing the underlying issue will likely result in the code returning and may lead to further transmission problems.
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