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 getting a signal that is too high from a sensor that helps the car know if it's parked. It's like when a toy's on/off switch is stuck and not working right.
The P271D code indicates that the signal voltage from the Park Pawl Position Sensor B is higher than the expected range. This sensor helps the vehicle's control module determine the position of the park pawl, which is a component that locks the transmission in place when the vehicle is in the 'Park' position.
The Park Pawl Position Sensor B is responsible for monitoring the position of the park pawl in the transmission. When the sensor circuit voltage is higher than expected, the powertrain control module (PCM) logs the P271D code. This could be due to a short circuit, faulty sensor, or issues with the wiring.
• Check Engine Light is on
• Vehicle may not shift into 'Park' properly
• Transmission may not lock in place
• Faulty Park Pawl Position Sensor B
• Wiring issues or short circuit in the sensor circuit
• Faulty PCM
PCM: Powertrain Control Module, the vehicle's computer that manages engine and transmission functions.
Park Pawl: A component in the transmission that locks it in place when the vehicle is in 'Park'.
• Use an OBD-II scanner to confirm the code
• Inspect the wiring and connections to the Park Pawl Position Sensor B
• Test the sensor for proper operation
• Replace the Park Pawl Position Sensor B if faulty
• Repair or replace damaged wiring
• Reprogram or replace the PCM if necessary
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $400
Moderate
• Toyota Camry
• Honda Accord
• Ford Fusion
• Regularly inspect and maintain transmission components
• Ensure wiring and connectors are in good condition
• Avoid harsh driving that may stress transmission components
Sensor Issue
• Have the vehicle inspected by a professional if the Check Engine Light is on
• Avoid driving the vehicle if it won't stay in 'Park'
Check with the vehicle manufacturer for warranty coverage on transmission components.
The P271D code has been reported in various models, particularly in vehicles with automatic transmissions, as manufacturers have integrated more electronic sensors for precise control.
Moderate – While the vehicle may still be drivable, it is important to address the issue to ensure the transmission locks properly in 'Park'.
Driving with a malfunctioning park pawl sensor can lead to safety issues, such as the vehicle rolling when parked. It is recommended to address the issue promptly.
• Vehicle in 'Park'
• Engine running
The Park Pawl Position Sensor B is typically located on or near the transmission assembly.
Q: Can I drive with a P271D code?
A: It is not recommended to drive with this code as it may cause the vehicle to not properly lock in 'Park', leading to potential safety issues.
Q: How do I reset the P271D code?
A: After repairs, you can use an OBD-II scanner to clear the code. However, if the issue is not fixed, the code will likely return.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
View on Amazon
Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.