SRS-ECU backup capacitor circuit voltage too low
Mitsubishi · airbag
Data confidence99%
The cited OEM bulletin documents B1479 for Mitsubishi in the stated vehicle and controller context. It identifies srs-ecu backup capacitor circuit voltage too low; the bulletin-specific condition must not be generalized to other platforms or modules.
Symptoms
SRS air-bag warning lamp illuminated
DTC may be non-erasable with MUT-III
Possible causes
Low battery voltage may be judged as backup-capacitor failure
Recommended checks
Perform a full module scan
Review freeze-frame and occurrence data
Inspect relevant wiring and connectors
Check power supplies and grounds
Check applicable OEM service information
Applies to2014, 2015, and 2017-2019 Mirage|2017-2019 Mirage G4Supplemental Restraint System ECU (SRS-ECU)
How to read B1479
B
Body: airbags, comfort and cabin systems.
1
Manufacturer-defined range: the meaning can differ between brands.
479
Specific fault index within the subsystem.
Frequently asked questions about B1479
What does B1479 mean?
SRS-ECU backup capacitor circuit voltage too low. The cited OEM bulletin documents B1479 for Mitsubishi in the stated vehicle and controller context. It identifies srs-ecu backup capacitor circuit voltage too low; the bulletin-specific condition must not be generalized to other platforms or modules.
Is B1479 generic or manufacturer-specific?
B1479 is a manufacturer-specific code. In this database it is documented for: Mitsubishi. The same number can mean something different on other brands.
Can TuningBot remove B1479 at file level?
Not guaranteed. Powertrain (P) codes can be reliably disabled in the ECU calibration, but body, chassis and network codes depend on the specific control unit and how the fault is implemented - some can be handled, some cannot. Ask for a quote and our engineers will check your file and tell you, free of charge, whether B1479 is removable in your case.
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Mitsubishi