P0442 on Chevrolet vehicles A small leak in the evaporative emissions system

A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.

Bulletins and campaigns Chevrolet filed with NHTSA whose summary names P0442. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

• 21NA124 Service bulletin
  2021-05-25 · Electrical System
• This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.
• 21NA124 Service bulletin
  2021-05-25 · Fuel System, Gasoline — Storage — Evaporative Emissions — Canister
• This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.
• 21-NA-124 Service bulletin
  2022-12-14 · Engine And Engine Cooling
• This service bulletin provides diagnostic tips/steps on testing for possible EVAP leaks in the system to correct a customer concern of an MIL Illuminated with DTCs P0442 and/or P0455 Set.
• 23-NA-073 Service bulletin
  2023-06-19 · Engine And Engine Cooling
• This technical bulletin provides repair information to correct a customer concern of Evaporative DTCs P0442, P0446, P0455 or P0449, Caused by Dust Intrusion into the Evaporative Canister.
• 23-NA-073 Service bulletin
  2023-09-20 · Engine And Engine Cooling
• This technical bulletin provides repair information to correct a customer concern of Evaporative DTCs P0442, P0446, P0455 or P0449, Caused by Dust Intrusion into the Evaporative Canister.
• PIT4943D Service bulletin
  2015-12-09 · Fuel System, Gasoline
• This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp. Technician may find Diagnostic Trouble Code P0442. Technician will need to review Techlink article from May 2013 titled "Using the Evaporative Emissions System Tester" Technician will need to follow these steps to help diagnose the issue. Firs
• PIP5461 Service bulletin
  2017-01-24 · Engine And Engine Cooling — Exhaust System — Manifold/Header/Muffler/Tail Pipe
• This Preliminary Information communication provides information to the technician about vehicles that have a Malfunction Indicator Lamp on. Technician will find Diagnostic Trouble Code P0442 set. Technician will need to inspect the evaporative emissions purge solenoid pipe for contact damage. Technician will replace the evaporative emissions purge solenoid pipe if found damaged.
• 17197 Service bulletin
  2017-07-14 · Equipment — Appliance — Air Conditioner
• 17197 01 - Service Update. Some vehicles may have contact between an evaporative emission pipe and air conditioning (A/C) hose. Over time, such contact may wear a hole into the pipe causing a malfunction indicator lamp (MIL) to illuminate and diagnostic trouble code (DTC) P0442 may set. Dealers will inspect the pipe for wear, install a bumper on the pipe; and if necessary, replace the purge pipe
• 17197 Service bulletin
  2017-06-28 · Engine And Engine Cooling — Exhaust System — Emission Control
• 17197 - Service Update. Some vehicles may have contact between an evaporative emission pipe and air conditioning (A/C) hose. Over time, such contact may wear a hole into the pipe causing a malfunction indicator lamp (MIL) to illuminate and diagnostic trouble code (DTC) P0442 may set. Dealers will inspect the pipe for wear, install a bumper on the pipe; and if necessary, replace the purge pipe.
• PIE0528 Service bulletin
  2019-07-11 · Engine And Engine Cooling
• Some customers may note a Check Engine Light related to the evaporative emission canister performance. Technicians may find the following DTCs set: • P0442 • P0455 • P0446 • P0449 • P0498 This engineering informational bulletin is requesting information from the field on warranty parts for complete canister assemblies that apply to the DTC codes specified and has leak conditions. Engineer
• 23-NA-073 Service bulletin
  2024-02-26 · Engine And Engine Cooling
• This technical bulletin provides repair information to correct a customer concern of Evaporative DTCs P0442, P0446, P0455 or P0449, Caused by Dust Intrusion into the Evaporative Canister.
• PIP5862 Service bulletin
  2022-07-28 · Engine And Engine Cooling — Exhaust System — Emission Control
• This Preliminary information communicates the possibility of dtc p0442 advising dealer to be sure the evaporative emission system is leak tested as directed through service information and replace evaporation emission canister if no issues are found.

A stored code names the test that failed, never the part that caused it. The record above is what Chevrolet and its owners have filed about it; the code’s page across every make has the whole file.