P0299 Diagnostic Trouble Code Discussion for January 2026
Turbocharger Engine Underboost
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| Help Request | Posted | |
| 2019 Chevrolet Malibu LT 1.5L Hesitation, MIL Lamp on, Boggs high speeds VIN: 1G1ZD5ST0K P0299: Underboost. ... Cold Climate Shops: We are dealing with same code P0299 On FIVE different cars(ALL with 1.5 turbo) in last 2 weeks. ALL cars have same problem: The intercoolers are icing up(Has been FRIGID here). TSB 18-NA-069 applies to all of these. They want us... |
January 29, 2026 |
