P0846 on Jeep
Transmission Fluid Pressure Sensor/Switch "B" Circuit Range/Performance
P0846 on Jeep vehicles indicates transmission fluid pressure sensor/switch "b" circuit range/performance. Au7o has documented this code across 1 Jeep model — most commonly on Liberty. This code means the transmission control module sees a signal from transmission fluid pressure sensor/switch B that is present but outside the expected (range/performance) values for current operating conditions. This sensor reports hydraulic pressure used to apply clutches and control shifts, so an implausible reading affects shift control. Symptoms can include harsh or delayed shifts, slipping, or the transmission entering failsafe mode. The fault is usually with the sensor, fluid pressure itself, or wiring rather than a total electrical failure. Typical repair costs on Jeep range from $350 to $2,800, depending on the specific model and root cause.
Common Causes of P0846
- •Faulty transmission fluid pressure sensor/switch B
- •Low or dirty transmission fluid
- •Internal hydraulic leak or low line pressure
- •Stuck or faulty pressure control solenoid
- •Wiring or connector problems
- •Valve body wear
- •Faulty transmission control module (less common)
P0846 on Jeep by Model
Jeep Liberty(1 issue)
- 42RLE Automatic Transmission - Solenoid Pack Failure, Delayed Engagement and Limp Mode2003-2012
The 42RLE four-speed automatic used behind the 3.7L V6 develops solenoid-pack and pressure-sensor faults that produce delayed or abandoned upshifts, harsh 2-3 shifts, slipping, and limp mode locked in second gear. The characteristic codes reported by owners are P0755 (2/4 shift solenoid) and P0846 (transmission fluid pressure sensor/switch B range-performance), the latter almost always chased to the solenoid/pressure-sensor pack. The forum record also carries an important diagnostic caveat: repeat P0846 failures after a new solenoid pack have been traced to a crushed wiring harness at the body-to-chassis pass-through and to loose valve body bolts, so a second solenoid pack is often the wrong answer. Fluid neglect accelerates all of it - the 42RLE is intolerant of burnt or low ATF.
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View P0846 across all makes →Frequently Asked Questions
What does P0846 mean on Jeep?▼
P0846 stands for "Transmission Fluid Pressure Sensor/Switch "B" Circuit Range/Performance." This code means the transmission control module sees a signal from transmission fluid pressure sensor/switch B that is present but outside the expected (range/performance) values for current operating conditions. This sensor reports hydraulic pressure used to apply clutches and control shifts, so an implausible reading affects shift control. Symptoms can include harsh or delayed shifts, slipping, or the transmission entering failsafe mode. The fault is usually with the sensor, fluid pressure itself, or wiring rather than a total electrical failure. On Jeep specifically, this code is documented across 1 model.
What causes P0846 on Jeep vehicles?▼
Common causes on Jeep: Faulty transmission fluid pressure sensor/switch B, Low or dirty transmission fluid, Internal hydraulic leak or low line pressure, Stuck or faulty pressure control solenoid, Wiring or connector problems. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0846 on a Jeep?▼
Repair costs on Jeep range from $350 to $2,800, depending on the specific model and root cause.
Which Jeep models have P0846 documented?▼
Au7o has documented P0846 on 1 Jeep model: Liberty.