Home › OBD2 Codes › P0872
P0872 Transmission
Transmission Fluid Pressure Sensor C Circuit Low
P0872 means the transmission fluid pressure sensor or switch C circuit is reading low, often a short to ground, a failed sensor, or a wiring fault. The controller loses accurate pressure feedback from that circuit.
🚗 Limited. A bad pressure sensor signal can cause erratic shifting or limp mode.
Is P0872 really the problem on YOUR car? Get a free AI diagnosis ranked by probability for your exact year, make, and model.
Run Free Diagnosis →
🎯 Top Causes, Ranked by Likelihood
#1 Faulty transmission pressure sensor C $100-$350
A failed sensor outputs low voltage.
#2 Short to ground in wiring $100-$300
A grounded signal wire pulls the circuit low.
#3 Low or degraded transmission fluid $100-$300
Low actual pressure can trigger a low reading.
#4 Poor connector or corrosion $20-$100
A corroded connector produces a low reading.
🩺 Common Symptoms Erratic or harsh shifting Limp mode Check engine light Delayed engagement Poor shift quality 💰 Repair Cost: DIY vs Shop
📋 Free OBD2 Code Cheat Sheet
The 50 most common codes with likely cause and DIY fix cost. Sent once, no spam.
🔧 How to Diagnose P0872 1 Check fluid level and condition first
2 Inspect the pressure sensor C connector and wiring
3 Measure the sensor signal voltage
4 Replace the transmission pressure sensor if faulty
❓ Frequently Asked Questions Can I drive with P0872?
Only briefly. Loss of pressure feedback can cause erratic shifting or limp mode. Diagnose it soon and check fluid first.
What does P0872 mean?
The transmission fluid pressure sensor C circuit reads low, usually a short to ground, a bad sensor, or genuinely low fluid pressure.
How much to fix P0872?
A replacement sensor is $100-$350, and wiring repairs run $100-$300.
🔗 Related Codes
Don't guess. Know exactly what's wrong. AmpAuto's AI ranks the real causes for your specific vehicle in 30 seconds.
Diagnose P0872 Free →