Network codes
Modules that stopped talking to each other. Pick your code for what it means, whether you can drive, common causes and what the repair usually costs.
| Code | What it means | Drive? | Typical, Boston |
|---|---|---|---|
| U0073 | Control module communication bus off | Short trips | $190 to $1,275 |
| U0100 | Lost communication with engine computer | Short trips | $190 to $1,275 |
| U0121 | Lost communication with ABS module | Short trips | $190 to $1,275 |
Typical range, estimate, for the most common repair for each code. Prices updated October 2026. Not a repair shop, estimates only.