OBD-II code · Powertrain (generic)
P0702 Transmission Control System Electrical
A general electrical fault is detected in the transmission control system. The TCM has flagged a circuit problem (open, short, or supply issue) without specifying which component. Look up additional codes from the TCM for detail.
Is it safe to drive with P0702?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyWiring fault inside transmission
Symptoms
- Check engine or transmission warning light on
- Harsh, delayed, or missing shifts
- Possible limp mode (locked in one gear)
- Slipping or shuddering during gear changes
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–5 h
- Emissions test
- Usually unaffected
- Parts involved
- Tcm, Transmission Wiring
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.