U135A Code - Lost Communication With Shift To Park Range Actuator
Quick Answer
The U135A code indicates that the vehicle's onboard computer has lost communication with the Shift to Park Range Actuator. Common causes include Faulty Shift to Park Range Actuator, Wiring or electrical connection issues, Corrosion or damage to the connectors. 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
- U135A indicates Lost Communication With Shift To Park Range Actuator.
- Common causes
- Common causes include Faulty Shift to Park Range Actuator, Wiring or electrical connection issues, Corrosion or damage to the connectors.
- 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 U135A Description
The U135A code indicates that the vehicle's onboard computer has lost communication with the Shift to Park Range Actuator. This actuator is responsible for ensuring that the vehicle is in the correct gear position, specifically when shifting into or out of the "Park" range. When communication is lost with this component, it can lead to issues with the vehicle's ability to shift gears properly, potentially causing safety concerns and affecting the overall performance of the transmission system. If left unaddressed, this issue can lead to further damage to the transmission and other related components.
Common Causes of U135A
- Faulty Shift to Park Range Actuator
- Wiring or electrical connection issues
- Corrosion or damage to the connectors
- Software or programming errors in the vehicle's computer system
- Mechanical problems within the transmission system
Symptoms of U135A
- Difficulty shifting into or out of "Park"
- Inability to start the vehicle due to incorrect gear position detection
- Dashboard warning lights related to transmission or gear shifting
- Jerking or hesitation when accelerating or decelerating
- Unusual noises coming from the transmission area
How to Fix U135A
- Begin by diagnosing the exact cause of the communication loss with the Shift to Park Range Actuator using a diagnostic scanner.
- Inspect the wiring and connectors for any damage or corrosion, repairing or replacing as necessary.
- Test the Shift to Park Range Actuator to determine if it is functioning properly. Replace if found to be faulty.
- Clear the diagnostic trouble codes from the vehicle's computer system and perform a test drive to ensure the issue has been resolved.
- If the problem persists, further diagnosis of the transmission system may be required to identify any underlying mechanical issues.
Cost to Fix U135A
The typical repair costs for addressing a U135A code can range from $200 to $500, including parts and labor. However, the specific costs can vary depending on the make and model of the vehicle, as well as the location and labor rates of the auto repair shop. It's recommended to obtain quotes from multiple shops to determine the most cost-effective solution.
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Code U135A Information for Specific Makes
- U135A Buick — Lost Communication With Shift To Park Range Actuator
- U135A Cadillac — Lost Communication With Shift To Park Range Actuator
- U135A Chevrolet — Lost Communication With Shift To Park Range Actuator
- U135A GMC — Lost Communication With Shift To Park Range Actuator
Frequently Asked Questions about U135A Code
1. What does the OBDII code U135A mean?
The U135A code indicates a communication failure between the vehicle's control modules and the Shift to Park range actuator.
2. What are common symptoms of the U135A code?
Symptoms include the vehicle not recognizing it is in "Park," inability to turn off the engine, warning lights on the dashboard, and possible battery drain.
3. What causes the U135A code to appear?
This code is typically caused by faulty wiring, a defective Shift to Park actuator, a malfunctioning control module, or poor electrical connections.
4. Can I still drive my car with the U135A code?
Driving may be possible, but unresolved issues could prevent the vehicle from recognizing "Park," leading to safety concerns and further damage.
5. How is the U135A code diagnosed?
A technician will use a scan tool to read the code, inspect the wiring and connectors, and test the Shift to Park actuator for proper operation.
6. How can the U135A code be fixed?
Repairs typically involve replacing the Shift to Park actuator, repairing damaged wiring, or updating/reprogramming the vehicle’s control modules.
7. What vehicles are prone to the U135A code?
This code is commonly reported in GM vehicles, including Chevrolet, GMC, and Cadillac models, but it can occur in others as well.
8. How much does it cost to repair the U135A code?
The repair cost depends on the issue but can range from $100 for wiring repairs to $500 or more if the actuator or control module needs replacement.
9. Can I reset the U135A code without fixing the issue?
While you can clear the code temporarily, it will likely return if the underlying problem is not resolved.
10. How can I prevent the U135A code from recurring?
Regular maintenance, inspecting wiring for damage, and ensuring proper software updates for control modules can help prevent this code from reappearing.
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