Chevrolet P1174: Fuel Trim Cylinder Balance

What Does The Chevrolet P1174 Code Mean?

This trouble code means that your air to fuel ratio is either running too lean or too rich.

What Are The Potential Causes Of The Chevrolet P1174 Code?

• The Fuel Trim Cylinder Balance diagnostic is very sensitive to HO2S design. A non-OE sensor or an incorrect part number may set a false DTC.
• Monitoring the misfire current counters, or misfire graph, may help to isolate the cylinder that is causing

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

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>>> Dorman 696-012 Engine Air Intake Hose for Select Chevrolet Models
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>>> YZHIDIANF 17113698 Fuel Injectors FJ315

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

• GM, 2018, Service Bullettin – PIP4925B SES Light with Fuel Trim and or Oxygen Sensor Codes.
• GM, 2019, Service Bullettin – PIP4017C SES Light due to a P1174 DTC – Perform Injector Test
  with AFIT (CH47976).