Like the title said, i went to the garage today cause of my checkengine light et they gave me that code. I have searched on the net but didn't find anything. Can someone tell me what it is and what could be the problem?

Thanks everyone!

 

Any help would be appreciated! The garagist don't have the time to do it before next monday and i'd like to know what may be the problem!!

 

All I have listed for it is .
Po1174 -Fuel trim cylinder balance,From what I read I think youu might have a leaky injector or a bad O2 sensor,the one ahead of the converter.
Found some info for you to read.

• The device control is not active.

• The intrusive diagnostics are not active.

• The engine overspeed protection is not active.

• The traction control is not active.

• The fuel control is in air-fuel Closed Loop.

• The system voltage is greater than 10 volts, or less than 18 volts.

• The engine run time is greater than 50 seconds.

• The engine coolant temperature (ECT) is greater than 10°C (50°F).

• The engine speed is greater than 1,000 RPM, but less than 4,000 RPM.

• The mass air flow is greater than 7 g/s, but less than 400 g/s.

• DTC P1174 runs continuously when the above conditions are met.

Conditions for Setting the DTC

Multiple samples of the pre-catalyst HO2S accumulated voltage are consistently higher than the desired value.

Diagnostic Aids

• 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 the condition.

 

Thanks alot Coblasts!!

My mechanic told me Chevy made a service bulletin on that trouble code and to correct that, they should change the injectors and reprogram the computer....is that correct ?

Thanks again!! You are the man!

 

Anyone have this fixed under powertrain or emissions warranty?