P1031: 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 P1031 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

No consumer complaints filed with NHTSA mention P1031. That usually means it's rare, or owners don't quote the code when they file.

Manufacturer service bulletins that name P1031

10 technical service bulletins and manufacturer communications filed with NHTSA mention P1031, from 3 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • MACK MACK, bulletin 10189802: Mack Chassis - Vehicles Equipped With A Vertical Selective Catalytic Reduction (SCR) System - Diagnostic Trouble Codes ( DTC ) P1031 With Possible P24DA Lighting The Malfunction Indicator Lamp ( MIL ) - US17+OBD16 (GHG17…
  • VOLVO VOLVO TRUCK, bulletin 10189900: Volvo Chassis - - Diagnostic Trouble Codes ( DTC ) P1031 With Possible P24DA
  • MACK CHU (2018), bulletin 10141411: Mack Chassis - Vehicles Equipped With A Vertical Selective Catalytic Reduction (SCR) System - Diagnostic Trouble Codes ( DTC ) P1031 With Possible P24DA Lighting The Malfunction Indicator Lamp ( MIL ) - US17+OBD16 (GHG17…
  • VOLVO VNX (2018), bulletin 10141458: Volvo Chassis - Vehicles Equipped With A Vertical Selective Catalytic Reduction (SCR) System - Diagnostic Trouble Codes ( DTC ) P1031 With Possible P24DA Lighting The Malfunction Indicator Lamp ( MIL ) - US17+OBD16 (GHG1…
  • VOLVO VAH (2018), bulletin 10142801: Volvo Chassis - Vehicles Equipped With A Vertical Selective Catalytic Reduction (SCR) System - Diagnostic Trouble Codes ( DTC ) P1031 With Possible P24DA Lighting The Malfunction Indicator Lamp ( MIL ) - US17+OBD16 (GHG1…
  • PORSCHE PANAMERA (2011, 2012, 2010), bulletin 10116407: Concern: Diagnosis of Failed Camshaft Adjuster Element Information: The following fault codes may be stored in the DME when a camshaft adjuster element fails: Mass Air flow: P0068, P1074 Cylinder Misfire: P0300 Fuel Pres…

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.