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 reading the temperature of the transmission fluid. It's like trying to read a thermometer that isn't working right.
The P1920 code is triggered when the Powertrain Control Module (PCM) detects a problem with the transmission fluid temperature sensor 'C'. This could mean the sensor is not sending the correct signals.
The transmission fluid temperature sensor 'C' monitors the temperature of the transmission fluid. This information is used by the PCM to adjust transmission operation for optimal performance. If the sensor's readings are out of the expected range, the PCM will set the P1920 code.
• Check Engine Light is on
• Transmission may shift harshly or erratically
• Poor fuel economy
• Faulty transmission fluid temperature sensor
• Wiring issues or poor connections
• PCM malfunction
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics II
• Check for any other related codes and address them first.
• Inspect the transmission fluid temperature sensor and its wiring for damage.
• Test the sensor with a multimeter to ensure it's functioning correctly.
• Replace the faulty transmission fluid temperature sensor.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly check and maintain transmission fluid levels.
• Inspect wiring and connectors for damage during routine maintenance.
• Use the correct type of transmission fluid.
Sensor Issue
• Avoid driving aggressively until the issue is resolved.
• Have the vehicle inspected by a professional mechanic.
• Monitor the vehicle for any changes in performance.
Check with the vehicle manufacturer for specific warranty coverage related to transmission components.
This code is relatively common in vehicles with high mileage or those that have not had regular transmission maintenance.
Moderate – While the vehicle may still be drivable, it's important to address the issue to prevent further damage.
Ignoring this code can lead to transmission damage, which may affect vehicle safety and reliability.
• Vehicle at normal operating temperature
• Transmission fluid level is correct
The transmission fluid temperature sensor is typically located inside the transmission or near the transmission fluid pan.
Q: Can I drive with a P1920 code?
A: It's possible to drive with this code, but it's not recommended as it can lead to further transmission damage.
Q: How can I prevent this code from appearing?
A: Regular maintenance of the transmission, including fluid changes and inspections, can help prevent this issue.
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