P0791 Lexus Code - Intermediate Shaft Speed Sensor 'A' Circuit
Quick Answer
The P0791 diagnostic trouble code (DTC) for Lexus vehicles relates to the Intermediate Shaft Speed Sensor 'A' Circuit. Common causes include Faulty Intermediate Shaft Speed Sensor, Damaged or corroded wiring/connectors, Issues with the transmission control module. 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
- P0791 Lexus indicates Intermediate Shaft Speed Sensor 'A' Circuit.
- Common causes
- Common causes include Faulty Intermediate Shaft Speed Sensor, Damaged or corroded wiring/connectors, Issues with the transmission control module.
- 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 P0791 Lexus Description
The P0791 diagnostic trouble code (DTC) for Lexus vehicles relates to the Intermediate Shaft Speed Sensor 'A' Circuit. In a Lexus vehicle, the Intermediate Shaft Speed Sensor is a crucial component of the transmission system. This sensor is responsible for monitoring the speed of the intermediate shaft within the transmission. By doing so, it provides vital data to the vehicle's onboard computer, allowing for proper shifting of gears and optimal transmission performance.
Common Causes of P0791 Lexus
- Faulty Intermediate Shaft Speed Sensor
- Damaged or corroded wiring/connectors
- Issues with the transmission control module
- Electrical system problems
- Transmission fluid contamination or low fluid levels
Symptoms of P0791 Lexus
- Harsh shifting between gears
- Delayed or erratic gear changes
- Transmission slipping
- Check Engine Light illuminated
- Reduced power or drivability
How to Fix P0791 Lexus
- Diagnose the issue using a scan tool to confirm the P0791 code and identify the specific cause.
- Inspect the Intermediate Shaft Speed Sensor and its wiring for any signs of damage or corrosion.
- Replace the faulty sensor if necessary, ensuring proper installation and connection.
- Clear the DTC and reset the vehicle's onboard computer to see if the issue has been resolved.
- Test drive the vehicle to confirm that the transmission is functioning properly and that the code does not reappear.
Cost to Fix P0791 Lexus
The typical repair costs for resolving the P0791 code on a Lexus vehicle can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor. Keep in mind that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate. Additionally, rates may be higher at dealerships or in metropolitan areas, while independent shops may offer more competitive pricing.
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