U0197Lost Communication With Telephone Control Module
- Generic OBD-II code · Network
- Turns on the check-engine light
- How the car detects it
- U0197 says the telephone control module, in most cars the Bluetooth hands-free unit, has gone quiet on the bus. FCA uses it widely under the name Hands Free Phone Module. Bulletin 08-112-14 covers 2013-2015 Town & Country, Grand Caravan, Compass, Patriot and Wrangler plus 2013-2014 Challenger, Avenger and 200 with Bluetooth not working; new HFM software loaded over USB cures it. Bulletin 08-083-19 (Journey 2012-2019, Charger and 300 2012-2014) adds that the MIL may come on with U0197-00 when the module fails to boot or no longer shows up in the wiTECH network view; a reflash is the fix. GM's Saab lists call it the telephone control module. Hands-free calls and voice control drop out. U0198 is the telematics unit, U0498 invalid data.
- What you may notice
- Phone does not pair or calls are not possible hands-free
- Display reports the hands-free module is still loading
- MIL on in some FCA models
- Likely causes
- LikelyHands-free module software hangs at boot (FCA update)
- PossibleModule without power or ground
- PossibleBus line or connector to the phone module faulty
- RareTelephone control module faulty
- Repair
- Medium · Usually a job for a workshop.Typical cost: €0 – €500
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.