CHEVROLET

PIP5215A

2017-08-21 · NHTSA 10137726

A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.

Manufacturer summary

Original wording in English

This Preliminary Information communication provides information to the technician about vehicles may set an intermittent Diagnostic Trouble Code P2097. Technician will need to check freeze frame/ failure records to determine what the short term/ long term fuel trims were when the Diagnostic Trouble Code set. If the fuel trims were adding fuel then check for an aftermarket air filter, and intake system air leak, and restricted flow injectors. If the fuel trims are normal, check for that the post Oxygen Sensor heater and circuits are working. Also check for exhaust system leaks, can use Evaporative Emissions System tester to pressurize exhaust system and spray a soapy solution around the exhaust system joints looking for leaks.

Repeated filings are grouped only when make, bulletin number, publication date and complete summary agree. Original record numbers are retained. Older publications remain available, and an explicit later version is shown when established. Pre-1994 vehicle associations are separated from default results; an unspecified year does not mean all model years apply.