DC/AC Converter Control Module A Switch B Circuit Range/Performance
The DC/AC converter switch B response is outside calibration. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
Affected components
- Dcac converter module a switch b
- Wiring harness
- Hybrid control module
Common causes
- High likelihood: Switch aged - response slowed
- Medium likelihood: High-resistance contact
- Low likelihood: Sensor element aged beyond calibration window
Diagnostic notes
- The malfunction indicator lamp may illuminate
- Reduced-power or limp mode may occur
Related codes
Sources
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.