P27A8 2014 Chevrolet Silverado Code - Transmission Control Solenoid Valve 2 Calibration Incorrect
Quick Answer
The Transmission Control Solenoid Valve 1, 2, 3, 4, 5, 6, 7 have a unique current versus oil pressure characteristic that is used to properly upshift or downshift the transmission. Common causes include Solenoid Valve Characterization Reprogramming. 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
- P27A8 2014 Chevrolet Silverado indicates Transmission Control Solenoid Valve 2 Calibration Incorrect.
- Common causes
- Common causes include Solenoid Valve Characterization Reprogramming.
- 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.
Code P27A8 2014 Chevrolet Silverado Description
What are the Possible Causes of the DTC P27A8 2014 Chevrolet Silverado?
- Solenoid Valve Characterization Reprogramming
How to Fix the DTC P27A8 2014 Chevrolet Silverado?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P27A8 2014 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P27A8 2014 Chevrolet Silverado Code
1. What does the OBDII code P27A8 mean on a 2014 Chevrolet Silverado?
P27A8 refers to "Transmission Control Solenoid Valve 2 Calibration Incorrect," indicating an issue with the calibration of the transmission solenoid valve 2 or a mismatch with the expected parameters.
2. What are the common symptoms of the P27A8 code in a 2014 Silverado?
Common symptoms include transmission shifting issues, delayed engagement, poor acceleration, or the transmission slipping.
3. What causes the P27A8 code to appear on a 2014 Chevrolet Silverado?
Possible causes include a faulty transmission control solenoid, incorrect calibration data in the Transmission Control Module (TCM), damaged wiring, or a software issue in the TCM.
4. Can I drive my 2014 Chevrolet Silverado with the P27A8 code?
While it may still be drivable, doing so can lead to further damage to the transmission. It’s best to address the issue promptly to avoid costly repairs.
5. How is the P27A8 code diagnosed?
A technician will use a scan tool to verify the code, inspect the wiring and connectors to the solenoid, test the solenoid’s operation, and check for software updates or calibration issues in the TCM.
6. How do you fix the P27A8 code on a Silverado?
Repairs may involve reprogramming or updating the TCM, replacing the faulty solenoid, repairing damaged wiring, or performing a transmission fluid service if contamination is present.
7. Does the P27A8 code mean the transmission needs to be replaced?
Not necessarily. This code often points to a calibration or solenoid issue, which can usually be resolved without replacing the entire transmission.
8. How much does it cost to fix the P27A8 code on a 2014 Chevrolet Silverado?
Repair costs can vary but may range from $200 to $600 depending on whether the solenoid needs replacement or if a TCM reprogramming is required.
9. Can a low transmission fluid level cause the P27A8 code?
Yes, low or contaminated transmission fluid can affect solenoid operation and calibration, potentially triggering this code.
10. Is it possible to clear the P27A8 code without fixing the issue?
Clearing the code without addressing the root cause may result in the code returning and further transmission issues developing over time.
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