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 which gear the car is in. It's like when you can't tell if a light switch is on or off.
The transmission range sensor is responsible for communicating the current gear position to the car's computer. A discrepancy between the sensor's reading and the actual gear position triggers this code.
P189F indicates a mismatch between the transmission range display and the transmission range sensor. This could be due to a faulty sensor, wiring issues, or a problem with the transmission control module.
• Check engine light illuminated
• Inaccurate gear display on the dashboard
• Transmission may not shift properly
• Faulty transmission range sensor
• Wiring issues or poor electrical connections
• Malfunctioning transmission control module
Transmission Range Sensor: A device that tells the car's computer what gear the transmission is in.
OBD-II: On-Board Diagnostics, a system that monitors vehicle performance and reports issues.
• Scan the vehicle for codes and freeze frame data.
• Inspect the transmission range sensor and its wiring for damage.
• Test the sensor's output and compare it to the expected values.
• Replace the faulty transmission range sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the transmission control module if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain transmission components.
• Ensure proper electrical connections and secure wiring.
• Perform routine diagnostic checks.
Sensor Issue
• Have the vehicle inspected by a professional mechanic.
• Avoid driving the vehicle if transmission issues are severe.
• Regularly check for updates or recalls related to the transmission system.
Transmission components may be covered under a powertrain warranty. Check with the manufacturer.
This code has been associated with various transmission sensor issues and is commonly reported in vehicles with high mileage.
Moderate – Addressing this issue promptly can prevent further transmission damage.
Driving with a malfunctioning transmission sensor may lead to unsafe driving conditions. Ensure repairs are made to maintain vehicle safety.
• Vehicle in park or neutral
• Engine running at operating temperature
The transmission range sensor is typically located on the transmission housing, near the shift linkage.
Q: Can I drive with a P189F code?
A: It's not recommended as it may lead to further transmission issues. Have it inspected as soon as possible.
Q: How do I reset the P189F code?
A: After fixing the issue, use an OBD-II scanner to clear the code. If the problem persists, the code will return.
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