U2099
High Speed Communication Enable Circuit
U2099 is an OBD-II diagnostic trouble code meaning: High Speed Communication Enable Circuit. Common causes: open or short circuit in the high-speed communication circuit, damage to connectors or corrosion of contacts. Estimated repair cost: $6–56.
Symptoms
- Check Engine light comes on
- Incorrect operation of the vehicle's electronic systems
- Loss of communication between modules
- Problems with diagnostics via OBD-II connector
Causes
- Open or short circuit in the high-speed communication circuit
- Damage to connectors or corrosion of contacts
- Malfunction of one of the electronic modules
- Problems with module power supply
- Interference in the electrical system
How to Fix
- Check the integrity of the wiring in the high-speed communication circuit
- Inspect and clean the contacts in the connectors
- Check power supply and ground of electronic modules
- Scan all modules for additional errors
- Replace damaged components if necessary
Related codes
FAQ
What does the U2099 code mean?
U2099 is an OBD-II diagnostic trouble code that indicates: High Speed Communication Enable Circuit
What causes a U2099 error code?
The most common causes of U2099 include: Open or short circuit in the high-speed communication circuit; Damage to connectors or corrosion of contacts; Malfunction of one of the electronic modules; Problems with module power supply.
How do I fix a U2099 diagnostic trouble code?
To fix U2099: Check the integrity of the wiring in the high-speed communication circuit. Inspect and clean the contacts in the connectors. Check power supply and ground of electronic modules. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U2099?
Yes, but get it checked soon
How much does it cost to fix U2099?
The estimated repair cost for U2099 is $6–56. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat