P0416 Diagnostic Trouble Code Discussion for January 2026
Secondary Air Switching Valve 'B' Circuit Open
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| Help Request | Posted | |
| 1998 GMC C2500 Suburban 7.4L moniters VIN: 3GKGC26J9W P0416: secondary Air bank 2 pending. ... supercharger, Nitrous Cal Carb compliant. vehicle originally came in with MIL on and a P0410 AIR fault/. Traced system, found clutch on AIR pump defective. Procured a "reman" unit and installed. All good at that time. Vehicle came back with AIR... |
January 28, 2026 |
