P0720 on Jeep: How to Diagnose & Fix
Output Speed Sensor Circuit Malfunction
1 Jeep model · 1 documented issue · 1 critical
P0720 on Jeep by model: symptoms, diagnosis and fix
Chrysler (FCA US LLC) recalled 2014-2015 Jeep Cherokee models built with the 9-speed automatic transmission because the transmission sensor clusters may have insufficient crimps in the transmission wire harness. With a bad crimp, the transmission can unexpectedly shift into neutral on its own. NHTSA classifies the resulting loss of drive as an increased crash risk, since the Cherokee can drop out of gear without warning while the driver is relying on it to keep moving. The Cherokee is one of several FCA vehicles sharing the 9-speed in this campaign; the 329,540-unit figure NHTSA lists covers the entire campaign across all of those vehicles, not the Cherokee alone. FCA's internal number for the recall is S55, and the owner notification began November 7, 2016.
Common Symptoms
- Transmission unexpectedly shifts into neutral while driving
- Sudden loss of drive / vehicle stops pulling even though the engine is running
How to Fix
The repair is free at any Jeep dealer. The dealer reprograms the Powertrain Control Module and the Transmission Control Module, and replaces the transaxle range sensor wire harness if it is found to be necessary. If you own a 2014 or 2015 Cherokee with the 9-speed automatic, enter your VIN at nhtsa.gov/recalls to confirm whether this campaign (NHTSA 16V529000 / FCA S55) is still open on your specific vehicle, then book the dealer visit. Chrysler customer service can be reached at 1-800-853-1403.
Sources for this issue (1)
P0720 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0720 mean on a Jeep?
P0720 stands for "Output Speed Sensor Circuit Malfunction." P0720 indicates a malfunction in the transmission output speed sensor circuit. The output speed sensor measures how fast the transmission's output shaft is turning, which the computer uses to calculate vehicle speed, control shift timing, and manage torque converter lockup. When the signal is missing or implausible, the transmission may shift harshly, get stuck in one gear (limp mode), or the speedometer may read incorrectly. The fault is usually in the sensor, its wiring, or the connector, though internal transmission issues can also be responsible. On Jeep it is documented across 1 model: Cherokee.
What are the most common causes of P0720?
The most common causes of P0720 are: Failed output (vehicle) speed sensor, Damaged wiring, connector, or corrosion in the sensor circuit, Metal debris on the sensor tip or damaged reluctor ring, Open or short in the signal circuit, Low or contaminated transmission fluid affecting components, Poor ground or reference voltage to the sensor, Faulty transmission control module (TCM/PCM). The specific cause varies by vehicle.
How much does it cost to fix P0720 on a Jeep?
Repair costs vary widely with the root cause and Jeep model; each issue on this page carries its own estimate where one is published.
Looking for P0720 on a different make?
View P0720 across all makes →Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.