P0736 on Jeep
Reverse Incorrect Gear Ratio
P0736 on Jeep vehicles indicates reverse incorrect gear ratio. Au7o has documented this code across 1 Jeep model — most commonly on Grand Cherokee. This code means the transmission control module calculated that the actual gear ratio in reverse does not match the expected ratio. The module compares input (turbine) speed to output speed to verify the transmission is in the correct gear; a mismatch in reverse indicates slipping or a hydraulic/mechanical problem in reverse. Symptoms include the vehicle slipping in or refusing to engage reverse. Internal clutch wear, low fluid, or solenoid faults are typical causes. Typical repair costs on Jeep range from $300 to $3,500, depending on the specific model and root cause.
Common Causes of P0736
- •Worn reverse clutches/bands (internal slippage)
- •Low or dirty transmission fluid
- •Faulty shift or pressure control solenoid
- •Internal hydraulic pressure loss
- •Valve body fault
- •Faulty speed sensor giving bad ratio data
- •Faulty transmission control module
P0736 on Jeep by Model
Jeep Grand Cherokee(1 issue)
- W5A580 (NAG1) 5-Speed Automatic Limp Mode and Harsh Shift from Conductor-Plate Speed Sensors and Fluid Contamination2005-2013
The Mercedes-derived W5A580 (NAG1) 5-speed automatic used in WK and early WK2 Grand Cherokees is mechanically strong but suffers well-documented electronic and fluid-related failures. Faulty conductor-plate speed sensors and shift-pressure solenoids drop the transmission into limp mode (stuck in a single gear). Contaminated or degraded fluid (including water intrusion past the dipstick/fill-tube seal) causes torque-converter-clutch shudder, harsh or delayed shifts, and a knock on coasting downshifts. The 13-pin connector adapter can also leak, wicking fluid into the harness by capillary action.
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What does P0736 mean on Jeep?▼
P0736 stands for "Reverse Incorrect Gear Ratio." This code means the transmission control module calculated that the actual gear ratio in reverse does not match the expected ratio. The module compares input (turbine) speed to output speed to verify the transmission is in the correct gear; a mismatch in reverse indicates slipping or a hydraulic/mechanical problem in reverse. Symptoms include the vehicle slipping in or refusing to engage reverse. Internal clutch wear, low fluid, or solenoid faults are typical causes. On Jeep specifically, this code is documented across 1 model.
What causes P0736 on Jeep vehicles?▼
Common causes on Jeep: Worn reverse clutches/bands (internal slippage), Low or dirty transmission fluid, Faulty shift or pressure control solenoid, Internal hydraulic pressure loss, Valve body fault. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0736 on a Jeep?▼
Repair costs on Jeep range from $300 to $3,500, depending on the specific model and root cause.
Which Jeep models have P0736 documented?▼
Au7o has documented P0736 on 1 Jeep model: Grand Cherokee.