P1101 on Cadillac vehicles

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 Cadillac filed with NHTSA whose summary names P1101. Quote the document number at the service desk — it is a diagnosis the maker has already written down.

• PIP-5402 Service bulletin
  2016-05-17 · Engine
• THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES THE TECHNICIAN WITH THE DIAGNOSIS AND REPAIR STEPS FOR A VEHICLE WITH A CHECK ENGINE LIGHT ON WITH DIAGNOSTIC TROUBLE CODE P015B OR A REDUCED ENGINE POWER MESSAGE WITH DIAGNOSTIC TROUBLE CODE P1101. TECHNICIAN SHOULD LOOK FOR A MISSING OR DAMAGED O-RING SEAL IN THE CHARGE AIR COOLER COUPLER.
• PIP5402A Service bulletin
  2017-06-19 · Equipment — Other — Owners/Service/Other Manual
• This Preliminary Information communication provides the technician with the diagnosis and repair steps for a vehicle with a check engine light on with Diagnostic Trouble Code P015B or a reduced engine power message with Diagnostic Trouble Code P1101. Technician should look for a missing or damaged O-ring seal in the charge air cooler coupler.
• PIP5402D Service bulletin
  2018-07-25 · Engine And Engine Cooling
• This Preliminary Information communication provides the technician with the diagnosis and repair steps for a vehicle with a check engine light on with Diagnostic Trouble Code P015B or a reduced engine power message with Diagnostic Trouble Code P1101. Technician should look for a missing or damaged O-ring seal in the charge air cooler coupler.
• PIP5402B Service bulletin
  2017-09-19 · Equipment Adaptive/Mobility
• This Preliminary Information communication provides the technician with the diagnosis and repair steps for a vehicle with a check engine light on with Diagnostic Trouble Code P015B or a reduced engine power message with Diagnostic Trouble Code P1101. Technician should look for a missing or damaged O-ring seal in the charge air cooler coupler.
• PIP5402E Service bulletin
  2019-10-22 · Engine And Engine Cooling
• This Preliminary Information communication provides the technician with the diagnosis and repair steps for a vehicle with a check engine light on with Diagnostic Trouble Code P015B or a reduced engine power message with Diagnostic Trouble Code P1101. Technician should look for a missing or damaged O-ring seal in the charge air cooler coupler.
• PIP6115 Service bulletin
  2026-05-21 · Unknown Or Other
• The document advise technicians after an engine repair involving removal of the camshaft actuators, the vehicle may set p1101 P0172 and or stalls when taken off idle. The technician is instructed to verify the intake and exhaust camshaft actuators are installed onto the correct camshafts.

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