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 thinks the sensor that tells how fast part of the transmission is spinning is getting too much power.
The P1810 code is triggered when the Powertrain Control Module (PCM) detects a high voltage signal from the input/turbine shaft speed sensor circuit.
The input/turbine shaft speed sensor measures the rotational speed of the input shaft in the transmission. This information is used by the PCM to control shift points and transmission operation. A 'high' circuit condition indicates that the voltage reading from the sensor is above the expected range.
• Check Engine Light illuminated
• Transmission may not shift properly
• Poor fuel economy
• Erratic speedometer readings
• Faulty input/turbine shaft speed sensor
• Wiring issues such as shorts or open circuits
• Poor electrical connections
• Faulty PCM
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics, Second Generation
• Use an OBD-II scanner to confirm the code.
• Visually inspect the wiring and connectors to the sensor.
• Test the input/turbine shaft speed sensor with a multimeter.
• Check the PCM for proper operation.
• Replace the input/turbine shaft speed sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Chevrolet Silverado
• GMC Sierra
• Cadillac Escalade
• Regularly inspect and maintain transmission wiring.
• Ensure connectors are clean and secure.
• Schedule regular transmission service.
Sensor Issue
• Avoid driving at high speeds until the issue is resolved.
• Consult a professional mechanic for accurate diagnosis.
Check vehicle warranty for coverage on transmission-related sensors.
This code has been associated with transmission issues in vehicles with automatic transmissions, particularly in models from the late 1990s and early 2000s.
Moderate – Address the issue soon to prevent potential transmission damage.
Driving with a malfunctioning transmission sensor can lead to unsafe driving conditions.
• Vehicle in park or neutral
• Engine running
The input/turbine shaft speed sensor is typically located on the transmission housing.
Q: Can I drive with a P1810 code?
A: It's not recommended to drive for long periods with this code, as it can lead to transmission damage.
Q: How do I reset the P1810 code?
A: The code can be reset using an OBD-II scanner after repairs are made, but it will return if the underlying issue is not fixed.
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