P0702 on Jeep
Transmission Control System Electrical
P0702 on Jeep vehicles indicates transmission control system electrical. Au7o has documented this code across 1 Jeep model — most commonly on Grand Cherokee. Indicates the PCM/TCM has detected an electrical fault (open, short, or out-of-range voltage) within the transmission control system circuitry rather than a performance issue. Points to wiring, connectors, or the control module itself. Typical repair costs on Jeep range from $300 to $3,500, depending on the specific model and root cause.
Common Causes of P0702
- •Open or shorted wiring in the transmission control circuit
- •Corroded or loose connectors
- •Faulty transmission control module
- •Failed transmission solenoid pack or internal harness
- •Damaged ground circuit
P0702 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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View P0702 across all makes →Frequently Asked Questions
What does P0702 mean on Jeep?▼
P0702 stands for "Transmission Control System Electrical." Indicates the PCM/TCM has detected an electrical fault (open, short, or out-of-range voltage) within the transmission control system circuitry rather than a performance issue. Points to wiring, connectors, or the control module itself. On Jeep specifically, this code is documented across 1 model.
What causes P0702 on Jeep vehicles?▼
Common causes on Jeep: Open or shorted wiring in the transmission control circuit, Corroded or loose connectors, Faulty transmission control module, Failed transmission solenoid pack or internal harness, Damaged ground circuit. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0702 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 P0702 documented?▼
Au7o has documented P0702 on 1 Jeep model: Grand Cherokee.