93094C

What the code means

Code 93094C logs excessively high resistance in the driver's knee airbag circuit. The ACSM module continuously monitors the resistance of the igniter circuits: under normal conditions it must fall within a specified range, and any upward deviation is read by the module as an open circuit or a partially damaged conductor.

The typical cause is chafed wiring: the harness is frayed or severed in places or corroded, which degrades the contact in the circuit. The fault triggers the red airbag indicator and a check control message; an intermittent pattern is common, where the indicator lights up and goes out — a sign of wiring that shorts as the car moves or as interior components shift.

Symptoms

Indication and messages:

• red airbag indicator on the instrument cluster;
• check control message about a passive safety system fault;
• the indication may be intermittent (unstable) — the warning appears and disappears.

Diagnosis and repair

The fault involves mechanical damage to the harness near the center console, so the repair follows this sequence:

1. Remove the center console to access the ACSM module.
2. Remove the lower trim panels under the dashboard to reach the harness.
3. Cut off the damaged harness connectors and repair the wiring.
4. Install new repair harnesses from the ACSM to both knee airbags (the OEM part number is not listed in the TSB).
5. Apply felt tape to the edge of the console bracket to prevent the wiring from chafing again.

A common diagnostic mistake is to just clear the code without repairing the harness: chafed wiring will bring the fault back, and over time the resistance will climb until the circuit is fully open.

Secondary problems

• Progressively rising resistance leads to a complete circuit failure — the driver's knee airbag won't deploy in a crash.
• The ACSM may log additional fault codes and disable the entire airbag system, meaning the remaining airbags won't fire in a collision either.