OBD-II code · Network
U0493 Invalid Data Received From Personal Computer
A receiving module detected implausible data from the on-board personal computer (commercial fleet/police laptop dock with vehicle interface). Status values fail plausibility checks and are rejected.
Is it safe to drive with U0493?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyModule internal fault or sensor input drift
- PossibleSoftware version mismatch after replacement
- Less likelyGateway module routing CAN messages incorrectly
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–4 h
- Emissions test
- Usually unaffected
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- On Board Pc
Related codes
- U048BInvalid Data Received From Headlamp Leveling Control Module B
- U0491Invalid Data Received From Digital Disc Player/Changer Module D
- U0492Invalid Data Received From Television
- U0494Invalid Data Received From Digital Audio Control Module A
- U0495Invalid Data Received From Digital Audio Control Module B
- U0496Invalid Data Received From Subscription Entertainment Receiver Module
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.