P2743 Code - Transmission Fluid Temperature Sensor 'B' Circuit High
Quick Answer
The P2743 diagnostic trouble code indicates an issue with the Transmission Fluid Temperature Sensor 'B' Circuit High. Common causes include Faulty transmission fluid temperature sensor, Wiring issues in the sensor 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
- P2743 indicates Transmission Fluid Temperature Sensor 'B' Circuit High.
- Common causes
- Common causes include Faulty transmission fluid temperature sensor, Wiring issues in the sensor 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P2743 Description
The P2743 diagnostic trouble code indicates an issue with the Transmission Fluid Temperature Sensor 'B' Circuit High. This sensor is responsible for monitoring the temperature of the transmission fluid, which is crucial for ensuring optimal performance and longevity of the transmission system. When the sensor detects that the transmission fluid temperature is too high, it triggers the P2743 code.
Common Causes of P2743
- Faulty transmission fluid temperature sensor
- Wiring issues in the sensor circuit
- Low transmission fluid levels
- Malfunctioning transmission fluid pump
- Overheating due to towing heavy loads or driving in extreme conditions
Symptoms of P2743
- Check Engine Light illuminated
- Transmission overheating warning light on the dashboard
- Rough or delayed shifting
- Transmission slipping
- Decreased fuel efficiency
How to Fix P2743
- Begin by diagnosing the root cause of the issue using a diagnostic scanner to retrieve the specific fault code.
- Inspect the transmission fluid temperature sensor and its wiring for any signs of damage or corrosion. Replace the sensor if necessary.
- Check the transmission fluid level and condition. Top up or replace the fluid as needed.
- Test the transmission fluid pump to ensure it is functioning correctly. Replace if faulty.
- Clear the fault code from the vehicle's computer and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P2743
The typical repair costs for addressing a Transmission Fluid Temperature Sensor 'B' Circuit High issue can range from $150 to $400, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.
Need more information about the P2743 code?
Need more information on how to fix the P2743 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P2743 code diagnosed by a professional: Find a repair shop in your area
Code P2743 Information for Specific Makes
- P2743 Dodge — Transmission Fluid Temperature Sensor 'B' Circuit High
Frequently Asked Questions about P2743 Code
No Frequently Asked Questions about P2743 Code found.
Discuss the causes and fixes for P2743 OBDII Code
Code P2743 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.