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P0872 is a diagnostic trouble code (DTC) for "Transmission Fluid Pressure Sensor/Switch C Circuit Low". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
A P0872 trouble code refers to a problem detected by the Powertrain Control Module (PCM) with the fluid pressure within the transmission. Some vehicle PCMs place the transmission into Limp-in mode in addition to storing a code and illuminating the Check Engine light. Related trouble codes include a P0870, P0871, P0873, and P0874 code.
A P0872 trouble code means that the transmission fluid pressure has exceeded or fallen below limits set by the manufacturer.
A transmission leak causing a low fluid condition is one cause of a P0872 trouble code. Additional causes include a defective high pressure pump, a malfunctioning transmission temperature sensor, an overheating engine, a slipping or malfunctioning transmission, or a faulty PCM.
Some common symptoms of a P0872 trouble code include the smell of overheated transmission fluid, sometimes accompanied by smoke. In addition to these signs, the transmission might also slip or fail to engage.
To diagnose a P0872 trouble code, the mechanic needs to gather certain tools, including an OBD-II scanner, a manufacturer's wiring diagram, and a digital volt/ohmmeter. Once they have the proper tools, the mechanic can then proceed to diagnose the trouble code by taking the following steps:
When diagnosing and repairing a P0872 trouble code, mistakes comonly made by mechanics range from fixing a transmission leak while not realizing the low fluid condition has damaged the transmission internally to rebuilding the transmission when unnecessary just because the transmission overheated.
When a vehicle PCM stores a P0872 trouble code it is important to have the problem diagnoses and fixed as soon as possible to prevent further potential transmission damage.
The mechanic should make repairs to the transmission in the following order:
YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.