P1488: owner reports and bulletins

Powertrain (manufacturer-specific). We haven't written the explanation for this code yet. Below is what owners and manufacturers have filed with NHTSA.

Got P1488 on your scanner? Tell the mechanic your year, make, model and any symptoms and you'll get the likely cause and what to check first. Ask about this code.

What owners report to NHTSA

1 complaints filed with NHTSA mention P1488, 1 of them since 2015, across 1 different models. The component owners most often filed it under: electrical system.

Manufacturer service bulletins that name P1488

19 technical service bulletins and manufacturer communications filed with NHTSA mention P1488, from 3 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • CADILLAC ESCALADE ESV (2021), bulletin 10185730: This Preliminary information communicates to the technition instructions to replace the particulate matter sensor for a P1488 and to use the special labor operation for tracking purposes.
  • CHEVROLET SILVERADO 2500 (2020, 2021), bulletin 10185730: This Preliminary information communicates to the technition instructions to replace the particulate matter sensor for a P1488 and to use the special labor operation for tracking purposes.
  • GMC SIERRA 2500 (2020, 2021), bulletin 10185730: This Preliminary information communicates to the technition instructions to replace the particulate matter sensor for a P1488 and to use the special labor operation for tracking purposes.
  • CHEVROLET SILVERADO 1500 (2021, 2020), bulletin 10193477: This Preliminary information communicates to the technition instructions to replace the particulate matter sensor for a P1488 and to use the special labor operation for tracking purposes.
  • GMC SIERRA 1500 (2021, 2020), bulletin 10193477: This Preliminary information communicates to the technition instructions to replace the particulate matter sensor for a P1488 and to use the special labor operation for tracking purposes.
  • CHEVROLET EQUINOX (2018), bulletin 10154292: This Preliminary information communicates that a Engine Control Module (ECM) service update calibration forP034A, P0421, P050F, P059F, P111E, P11DC, P122D, P1488, P220B, P22FE, P2457, P2463, P2BAA.

Sources: NHTSA Office of Defects Investigation complaint database and manufacturer communications file, snapshots September 2026. A complaint or bulletin that mentions a code is a report about that vehicle, not a statement that the code has one cause.