P27AB Code - Transmission Control Solenoid Valve 5 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
- P27AB indicates Transmission Control Solenoid Valve 5 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 P27AB Description
What are the Possible Causes of the DTC P27AB?
- Solenoid Valve Characterization Reprogramming
How to Fix the DTC P27AB?
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 P27AB 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.
Need more information about the P27AB code?
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Need Help with the Code?
Get the P27AB code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- P27AB Buick — Transmission Control Solenoid Valve 5 Calibration Incorrect
- P27AB Cadillac — Transmission Control Solenoid Valve 5 Calibration Incorrect
- P27AB Chevrolet — Transmission Control Solenoid Valve 5 Calibration Incorrect
- P27AB GMC — Transmission Control Solenoid Valve 5 Calibration Incorrect
Frequently Asked Questions about P27AB Code
1. What are the common symptoms of OBDII code P27AB?
- Common symptoms of P27AB include transmission shifting issues, harsh shifting, slipping, and decreased fuel efficiency.
2. What can cause the Transmission Control Solenoid Valve 5 Calibration Incorrect code (P27AB) to trigger?
- The P27AB code can be triggered by a faulty transmission control solenoid valve, wiring issues, or a software calibration error.
3. How can I diagnose the cause of OBDII code P27AB?
- To diagnose P27AB, you can perform a visual inspection of the transmission control solenoid valve and its wiring, conduct a transmission fluid check, and use an OBDII scanner for further diagnosis.
4. Can I continue driving my vehicle with the P27AB code present?
- It is not recommended to drive your vehicle with the P27AB code present, as it can lead to further damage to the transmission and potentially unsafe driving conditions.
5. How do I repair OBDII code P27AB?
- To repair P27AB, you may need to replace the transmission control solenoid valve, repair any wiring issues, and perform a software calibration reset using a professional OBDII scanner.
6. Are there any DIY tips for fixing the P27AB code?
- While some basic inspections can be done DIY, it is recommended to seek professional help for repairing the P27AB code to ensure proper diagnosis and repair.
7. Can a software update fix the P27AB code?
- In some cases, a software update may resolve the P27AB code if it was triggered by a calibration error. Consult with a professional mechanic or dealership for software updates.
8. How much does it typically cost to fix OBDII code P27AB?
- The cost to fix P27AB can vary depending on the root cause of the issue, but it may involve parts replacement and labor costs, ranging from a few hundred to over a thousand dollars.
9. Is it safe to clear the P27AB code using an OBDII scanner?
- Clearing the P27AB code using an OBDII scanner may temporarily remove the warning light, but it is important to address the underlying issue causing the code to prevent further damage.
10. How often does the Transmission Control Solenoid Valve 5 Calibration Incorrect code (P27AB) occur in vehicles?
- The P27AB code is relatively uncommon but can occur in vehicles with transmission control solenoid valve or calibration issues. Regular maintenance can help prevent such issues.
Discuss the causes and fixes for P27AB OBDII Code
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