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U2098 Cadillac Code - MOST Communication Enable Circuit

- Code Popularity: 508 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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By AutoCodes.com - Updated Jun 15, 2020
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|Code U2098 Cadillac Possible Causes

  • Faulty Radio
  • Radio harness is open or shorted
  • Radio circuit poor electrical connection

|How do I Fix the Code U2098 Cadillac?

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Does your Cadillac have Safety Recalls? → Check here

|Code U2098 Cadillac Tech Notes

U2098 00 MOST Communication Enable Circuit Malfunction
U2098 02 MOST Communication Enable Circuit Short to Ground

|What is the Cost to Diagnose the Code U2098 Cadillac?

Labor: 1.0

The cost of diagnosing the U2098 Cadillac code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

|What are Code U2098 Cadillac Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|Code U2098 Cadillac Description

When the ignition is ON, the Radio initializes the Media Oriented Systems Transport (MOST) bus by sending a short 100 ms low voltage pulse on the electronic control line (or MOST control line) connected to all devices contained on the MOST ring. When MOST receive, transmit or control line faults are detected, transmit/receive messages will not receive as expected from the wakeup request. The Radio and the Human Machine Interface Control Module will then perform diagnostics to isolate these MOST faults. If the MOST control line is shorted low to 0 V for an excess amount of time, the Radio and the Audio Amplifier, if equipped, will set a U2098 Diagnostic Trouble Code (DTC) and Human Machine Interface Control Module, if equipped, will set a U0029 02 DTC. At this point, the MOST bus will be unable to communicate until the shorted MOST control line is repaired. The DTC will set when the Radio senses a short to ground on the MOST control circuit.

OBDII Code U2098 Cadillac - MOST Communication Enable Circuit - AutoCodes.com
U2098 Cadillac Code - MOST Communication Enable Circuit

|Need More Information on the U2098 Cadillac Code?

Need more information on how to fix the U2098 Cadillac code? Get Access to Factory Service Manuals

|Need Help with the U2098 Cadillac Code?

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|Code U2098 Cadillac comments

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