Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
Your car has a sensor that checks the pressure of the fluid in the transmission. This code means that the sensor is not always working correctly, like a light bulb that flickers on and off.
The transmission fluid pressure sensor/switch monitors the pressure of the transmission fluid. An intermittent issue means the sensor is not consistently sending the correct signals.
The P0874 code indicates that the Transmission Control Module (TCM) has detected an intermittent signal from the transmission fluid pressure sensor/switch C. This could be due to wiring issues, a faulty sensor, or other electrical problems.
• Check Engine Light is on
• Transmission slipping
• Erratic or harsh shifting
• Faulty transmission fluid pressure sensor
• Damaged or corroded wiring/connectors
• Transmission fluid issues
Transmission: A system in a vehicle that transmits power from the engine to the wheels.
Sensor: A device that detects or measures a physical property and records, indicates, or otherwise responds to it.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the transmission fluid pressure sensor for proper operation.
• Replace the transmission fluid pressure sensor.
• Repair or replace damaged wiring/connectors.
• Flush and replace transmission fluid if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regular transmission fluid checks
• Routine maintenance and inspections
• Promptly address any transmission issues
Sensor Issue
• Avoid driving aggressively until the issue is fixed.
• Have the vehicle inspected by a professional mechanic.
Check if the vehicle's powertrain warranty covers transmission components.
This code has been associated with wiring issues and sensor failures in various vehicle models.
Moderate – Address the issue soon to avoid potential transmission damage.
Driving with a malfunctioning transmission sensor can lead to unsafe driving conditions.
• Vehicle at operating temperature
• Transmission in drive mode
The transmission fluid pressure sensor is typically located on the transmission housing.
Q: Can I drive with a P0874 code?
A: It's not recommended to drive for extended periods with this code, as it can lead to transmission damage.
Q: Will a P0874 code cause my car to fail an emissions test?
A: This code is not directly related to emissions, but a Check Engine Light can cause a failed test.
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