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 figuring out which gear the transmission should be in.
The vehicle's control module is not accurately detecting or selecting the transmission range, which could affect gear shifting.
The P27B1 code indicates a performance issue with the internal control module related to the transmission range selection. This could be due to a malfunction in the module's ability to read or control the transmission range sensor, affecting the vehicle's ability to shift gears properly.
• Check Engine Light is on
• Transmission may not shift properly
• Vehicle may not start
• Faulty transmission range sensor
• Wiring issues in the transmission control circuit
• Malfunctioning control module
Transmission Range Sensor: A sensor that detects the position of the gear selector.
Control Module: A computer that controls various functions of the vehicle.
• Use an OBD-II scanner to confirm the code
• Inspect the transmission range sensor and wiring
• Test the control module for faults
• Replace the transmission range sensor
• Repair or replace damaged wiring
• Reprogram or replace the control module
• OBD-II scanner
• Multimeter
• Basic hand tools
$200 - $800
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular maintenance of the transmission system
• Check and replace faulty sensors promptly
• Ensure wiring is intact and free from corrosion
Transmission Issue
• Have the vehicle inspected by a professional
• Do not ignore the Check Engine Light
• Avoid driving the vehicle if shifting issues are severe
Check with the vehicle manufacturer for warranty coverage on transmission components.
This code is relatively common in vehicles with electronic transmission control systems, especially in older models.
Moderate – It is important to address this issue to avoid further transmission damage.
Driving with a malfunctioning transmission can be unsafe and may lead to further damage.
• Vehicle at operating temperature
• Transmission in various gear positions
The transmission range sensor is typically located on the transmission housing.
Q: Can I drive with a P27B1 code?
A: It's not recommended to drive with this code as it can lead to transmission damage.
Q: How do I reset the P27B1 code?
A: The code can be cleared with an OBD-II scanner, but it's important to fix the underlying issue first.
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