Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is having trouble understanding the speed of a part inside the transmission. It's like when your speedometer doesn't show the right speed when you're riding a bike.
The P1847 code indicates that the transmission control module (TCM) has detected an implausible or inconsistent signal from the input/turbine shaft speed sensor.
The input/turbine shaft speed sensor measures the rotational speed of the transmission's input shaft. This data is crucial for the TCM to manage gear shifts and overall transmission performance. If the signal from this sensor is inconsistent or implausible, it can lead to incorrect transmission operation.
• Check Engine Light is on
• Erratic or harsh shifting
• Transmission slipping
• Faulty input/turbine shaft speed sensor
• Wiring issues or poor electrical connections
• Faulty transmission control module (TCM)
TCM: Transmission Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to verify the code.
• Inspect the wiring and connections to the sensor.
• Test the input/turbine shaft speed sensor for proper operation.
• Replace the input/turbine shaft speed sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the TCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain transmission components.
• Ensure proper electrical connections.
• Use quality replacement parts.
Sensor Issue
• Avoid driving the vehicle until the issue is fixed to prevent further damage.
• Consult a professional mechanic for accurate diagnosis.
Check with your vehicle manufacturer for warranty coverage on transmission components.
This code has been associated with transmission issues in various vehicles, often due to sensor failures or wiring problems.
Moderate – Addressing this issue promptly can prevent further transmission damage.
Driving with transmission issues can be unsafe and may lead to further mechanical problems.
• Vehicle at operating temperature
• Driving under normal conditions
The input/turbine shaft speed sensor is typically located on the transmission housing.
Q: Can I drive with a P1847 code?
A: It's not recommended to drive with this code as it may cause further transmission damage.
Q: How do I reset the P1847 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, the code should not return.
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