mass air flow sensor code p0171

P0161 Front Secondary Heated Oxygen Sensor Secondary HO2S Bank 2 Sensor 2 Heater Circuit Malfunction P0171 Fuel System Too Lean P0172 Fuel System Too Rich P0174 Front Bank Bank 2 Fuel System Too Lean. 2008 I have replaced the MAF sensor air filter knock sensor fuel pump coil tps fuel filter distributor cap and rotor.


P0171 System Too Lean Bank 1 Maf Sensor Problems

If there are no intake leaks the next step is to replace the air filter and clean the air flow meter.

. Here is what I have done since Aug. If the problem persists. But guess what I am still having the same codes in this order P0327P0171 and P0174.

P0101 Mass Airflow MAF Sensor RangePerformance Problem P0102 Mass Airflow MAF Sensor Circuit Low Voltage. 1999 Chevy Silverado Codes P0327 P0171 and P0174 Okay guys Im back with the same problem. P0171 code tech notes If the P0171 is combined with the P0174 code its very likely that the problem is caused by an intake leak.

P0411 Secondary Air.


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