Airbag control unit with part number P56054193AA

What does the airbag control unit P56054193AA do?

The airbag control unit P56054193AA is the central switching unit of the restraint system (SRS) of Dodge. It processes the measured values from the crash sensors, determines in an accident which airbags and seatbelt pretensioners trigger, and monitors the entire system. If it detects a fault, it shows this via the airbag warning light. After an accident it stores crash data and locks itself.

The switching unit works on every journey without you noticing it. In doing so it continuously checks sensors, wiring and output stages.

Why does the control unit P56054193AA fail?

The cause is most often to be found in crash data stored after an accident, even if no airbag has deployed; a standard diagnostic tool cannot clear them. Further causes are aged electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes.

An incident without airbag deployment can also leave crash data behind. When troubleshooting, this point therefore belongs at the start.

Aged components and cold solder joints develop over a longer period. Moisture and corrosion attack connectors, and voltage spikes, for example from jump-starting, can damage electronics.

How can you tell that the P56054193AA is defective?

A fault first shows itself on the airbag warning light in the instrument cluster, which lights up constantly or only intermittently. A fault message may accompany it in the instrument cluster, the diagnostic tool receives no connection to the control unit, or the fault memory cannot be cleared.

While this fault persists in the system, airbags and seatbelt pretensioners may fail to deploy in an emergency. A warning of this kind therefore requires prompt clarification.

Which component is behind it can only be traced via the fault memory.

Which vehicles is the P56054193AA fitted in?

The part number is decisive, not the type designation. The P56054193AA is fitted in these vehicles: Dodge Ram DS/DJ/D2 (2009-2018).

The vehicle assignment follows here:

• Dodge Ram DS/DJ/D2 (2009-2018)

Comparing the part number on the label of the removed unit with this page confirms that you have the right unit. Having the fault memory read out is the next step, because only the log shows whether the control unit itself is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 0285015046, 56043128AC, 56043128AD, 68303217AA, 68303218AA, 68346712AA.

How does the repair of the P56054193AA work?

Have the fault memory read out first; the log goes with the parcel. Disconnect the battery before you remove the control unit. Then create a repair order online and send the well-packed unit. Processing at Airbag24 usually takes 3–4 working days.

Afterwards defective components are replaced, stored crash data is deleted and the unit undergoes a function test.

The unit then goes back to you. Our repairs come with 2 years' statutory liability for defects. The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.

How does the control unit P56054193AA get to Airbag24?

You send the unit to Airbag24 as a parcel or book a UPS collection for an extra charge. Airbag24 then sends the repaired unit back to you by UPS.

Pack the printed repair order with the parcel and pack the control unit shockproof.