P0875 OBD-II Trouble Code: Transmission Fluid Pressure Sensor/Switch D Circuit

Our certified mechanics come to you · Get a fair and transparent estimate upfront

Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0875 code

P0875 is a diagnostic trouble code (DTC) for "Transmission Fluid Pressure Sensor/Switch D Circuit". 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 for $114.99 . Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.0 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford $114.99 $20.0
Toyota $114.99 $20.0
BMW $124.99 $20.0
SCHEDULE P0875 DIAGNOSTIC Get a fair and transparent estimate upfront

P0875 code definition

The P0875 code indicates that the transmission fluid pressure is not correct, according to the manufacturer’s specifications.

What the P0875 code means

The fluid pressure sensor provides the PCM with the data necessary to monitor the transmission performance. If the fluid pressure increases, the voltage reading from the pressure sensor will increase; if the pressure decreases, the voltage decreases. If the PCM finds that the voltage is either decreased or increased in a situation where it should be the opposite, the P0875 code is stored.

What causes the P0875 code?

The most common cause of the P0875 code is dirty, contaminated, or low transmission fluid, often related to a lead. Other causes can include:

  • A defective transmission high pressure pump
  • Faulty temperature sensor
  • Overheated engine
  • Mechanic internal transmission failures.
  • A faulty PCM, in rare cases.

What are the symptoms of the P0875 code?

Some vehicle owners may notice no symptoms at all, and only observe the Check Engine lamp illuminating. However, the symptoms of the P0875 code can include:

  • Overheated transmission fluid, which produces a distinctive smell
  • Smoke from the transmission area
  • Lack of engagement or disengagement from the transmission
  • Harsh shifting or a slipping transmission.

How does a mechanic diagnose the P0875 code?

After verifying the code with an OBD-II scanner, all transmission-related faults should begin with a check of the transmission fluid. If the fluid is too low, it should be refilled; if the fluid is dirty, filled with debris, or smells burnt, it may be that the entire system must be flushed, and then refilled with clean transmission fluid.

After this, or any other repair, is performed, it’s important to clear the code from the PCM, and retest the system. This process helps the mechanic narrow down the exact cause of the issue. If the transmission fluid fix did not cause the code to disappear from the PCM, then next step is to inspect the electrical components, and to continue working through possible repairs until the correct issue is found.

Common mistakes when diagnosing the P0875 code

The two most common misdiagnoses with the P0875 code are:

  • Not realizing that a transmission fluid has damaged vital transmission components, which will require the entire transmission to be rebuilt.
  • Or, immediately assuming the transmission needs rebuilding without checking other possible causes first.

How serious is the P0875 code?

While some vehicle owners may not observe any symptoms, this code still indicates a serious issue that should be addressed right away. As time goes on, vehicle performance will decline until the vehicle is not drivable, and ignoring this trouble code could lead to greater issues down the road.

What repairs can fix the P0875 code?

Repairs to fix the P0875 code include:

  • Refilling the transmission fluid, or flushing the system and refilling
  • Replacing a defective transmission high pressure pump
  • Replacing a faulty temperature sensor
  • Repairing mechanic internal transmission failures
  • Replacing a faulty PCM, in rare cases

Need help with a P0875 code?

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.

Check Engine Light
trouble codes
P0875

No more waiting rooms! Our mechanics will come to you to diagnose and fix the P0875 code.

SCHEDULE P0875 DIAGNOSTIC
Get a $20 credit for the follow-up repair

Recent Check Engine Light is on Inspection reviews

Excellent Rating

(7400)

Rating Summary
6879
249
58
41
173
6879
249
58
41
173
 at YourMechanic

David

13 years of experience
393 reviews
David
13 years of experience
Chevrolet Malibu L4-2.4L - Check Engine Light is on Inspection - Marietta, Georgia
He explained everything to me in detail on what I needed to know about my car. Definitely recommend him for getting the job done.
 at YourMechanic

Raymond

37 years of experience
402 reviews
Raymond
37 years of experience
Toyota Camry L4-2.2L - Check Engine Light is on - Las Vegas, Nevada
Raymond did a great job however I was charged for two hours labor and he was only here less than 45 minutes. should I expect this on future appointments with your mechanic ?
 at YourMechanic

Shane

17 years of experience
217 reviews
Shane
17 years of experience
Volkswagen EuroVan V6-2.8L - Check Engine Light is on Inspection - Austin, Texas
Arrived on time. Explained the issues he found and how he will fix it. I have parts on order and will schedule an appointment to have Shane install the parts when they arrive.
 at YourMechanic

Kanstantsin

19 years of experience
51 reviews
Kanstantsin
19 years of experience
Ford F-150 V8-4.6L - Check Engine Light is on Inspection - Littleton, Colorado
Kanstantsin arrived early. Was very courteous and professional. Will highly recommend to anyone. Thank you Kanstantsin.


More related articles

Related questions

Changed VANOS Solinoid-Mechanic Wants to Replace Entire Engine
It's entirely possible that there is an engine problem. The VANOS system is BMW's take on variable valve timing, and if your car is a regular Mini Cooper, not the Cooper S model, then it has double VANOS and uses...
ECU and related components
Your ECU would have to be programmed. Although it is possible nowadays for consumers to download the software from the OEM for a fee, you need an interface cable and knowledge of the programming steps. Once you add up the...
Car drives poorly with heavy fuel consumption and poor transmission
Hi and thanks for contacting YourMechanic. First, with the dirty cooling system, you would need to perform a coolant flush and replace the thermostat (https://www.yourmechanic.com/services/thermostat-replacement) and radiator cap (https://www.yourmechanic.com/services/pressure-test-radiator-cap). This will help with the overheating issue if you are still...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com