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Slow respond(heated oxygen sensor bank 1 aasensor 1)

The powertrain control module uses the aasensor to calcule the air/fuel ratio in the aaexhaust.

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0152 coed


P0152 P0152 - O2 Sensor Circuit High Voltage Bank 2 Sensor 1Possible causes - Faulty Front Heated Oxygen Sensor Bank 2
- Intake air leaks may be faulty
- Exhaust gas leaks
- Front Heated Oxygen Sensor Bank 2 harness is open or shorted
- Front Heated Oxygen Sensor Bank 2 circuit poor electrical connection
- Inappropriate fuel pressure
- Faulty fuel injectors
eplacing the Front Heated Oxygen Sensor Bank 2 usually takes care of the problem
Symptoms- Engine Light ON (or Service Engine Soon Warning Light)
- High Fuel Consumption
- Excessive Smoke from Exhaust P0152 Description The front heated oxygen sensor (or O2 sensor 1) is placed into the exhaust manifold. It detects the amount of oxygen in the exhaust gas compared to the outside air. The heated oxygen sensor 1 has a closed-end tube made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. The heated oxygen sensor 1 signal is sent to the Engine Control Module (ECM). The ECM adjusts the injection pulse duration to achieve the ideal air-fuel ratio. The ideal air-fuel ratio occurs near the radical change from 1V to 0V.

Mar 19, 2013 | 2005 Dodge Ram 1500

1 Answer

Troubleshooting po133


Replace any upstream O2 Sensors with 100,000 miles
on them or codes as you have

Leave the downstream monitors

Dec 05, 2012 | 1999 Chevrolet Malibu

1 Answer

Down to the final OB code on my truck...Po174


P0174 FORD - Fuel Injection System Too lean Bank 2xicon.jpghttp://engine-codes.com/p0174_ford.htmlForum CodePossible causes- Intake air leaks
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Faulty Mass Air Flow (MAF) sensor
- Incorrect Positive Crankcase Ventilation (PCV) hose connection Tech notes The codes is usually set when there is an intake leak after the air flow meter, before replacing any parts check for loose or broken hoses and intake gasket leak. On Ford some models dirty air filter, and dirty or faulty air flow sensor are the cause of the problem.

It's a very common problem for the Ford Windstar. Here a link to a web site with information how to repair:
When is the code detected?- Fuel injection system does not operate properly.
- The amount of mixture ratio compensation is too small. (The mixture ratio is too lean.) Symptoms- Engine Light ON (or Service Engine Soon Warning Light)
- Excessive Fuel ConsumptionP0174 FORD Description The Powertrain Control Module (PCM) monitors the engine Air/Fuel mixture ratio, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. The PCM calculates the necessary compensation to correct the offset between the actual and the theoretical ratios.

In case the amount of the compensation value is extremely large (The actual mixture ratio is too lean.), the PCM judges the condition as the fuel injection system malfunction and light up the engine light.

Oct 08, 2012 | Cars & Trucks

2 Answers

Check Engine light with Po131 o2 circuit low voltage sensor 1 bank 1 reading, what does that mean?


- Front Heated Oxygen Sensor Bank 1 harness is open or shorted
- Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection
- Faulty Front Heated Oxygen Sensor Bank 1
- Inappropriate fuel pressure
- Faulty fuel injectors
- Intake air leaks may be faulty
- Exhaust gas leaks

Replacing the O2 Sensor 1 usually takes care of the problem

The front heated oxygen sensor (or O2 sensor 1) is placed into the exhaust manifold. It detects the amount of oxygen in the exhaust gas compared to the outside air. The heated oxygen sensor 1 has a closed-end tube made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. The heated oxygen sensor 1 signal is sent to the Engine Control Module (ECM). The ECM adjusts the injection pulse duration to achieve the ideal air-fuel ratio. The ideal air-fuel ratio occurs near the radical change from 1V to 0V.

Feb 07, 2012 | 2004 Honda Odyssey

2 Answers

My truck is showing codes 171 and 174. Can you help


P0174 Generic Definition

Fuel Trim Bank Two Condition
- The ECM has detected a rich or lean air/fuel ratio condition on engine bank two

Probable Cause[s]

  1. If bank one and two are set together suspect a fuel pressure condition or MAF sensor fault
  2. Failed HO2S21
  3. Ignition misfire condition
  4. Fuel injector problem
  5. Engine mechanical condition




    P0171 Generic Definition

    Fuel trim bank one condition
    - The powertrain control module uses the oxygen sensor to calculate the air/fuel ratio of the engine. The computer has recognized a rich or lean condition on one engine bank only.

    Probable Cause[s]

    1. If bank one and two codes set together suspect fuel pressure or MAF (Mass Air Flow) Sensor
    2. Oxygen sensor defective
    3. Ignition misfire-repair
    4. Fuel injector problem












      Mar 05, 2011 | 1999 Chevrolet Silverado 1500

      1 Answer

      What is p1148


      P1148 - Closed Loop Control Function Bank 1
      This mean that the closed loop control function for bank 1 does not operate even when vehicle is driving in the specified condition.

      The Powertrain Control Module (PCM) or Electronic Control Module(ECM) monitor the function of the Front Oxygen (O2) sensor or Air/Fuel (A/F) sensor by comparing the signal with the Rear O2 sensor.

      Symptoms:
      - Engine Light ON (or Service Engine Soon Warning Light)

      Possible causes:
      - Harness or connectors Front Oxygen (O2) sensor or Air/Fuel (A/F) sensor 1 circuit is open or shorted.
      - Front Oxygen (O2) sensor or Air/Fuel (A/F) sensor bank 1
      - Front Oxygen (O2) sensor or Air/Fuel (A/F) sensor bank 1 heater

      Possible solution:
      - Repair harness or connector. If repair is needed
      - Replaced Front Oxygen (O2) sensor or Air/Fuel (A/F) sensor bank 1


      Then, possible causes are faulty harness or connectors to the air fuel ratio sensor, a faulty air fuel ratio sensor (1) or faulty air fuel ratio sensor (1) heater. Most likely yes it is just faulty sensor. Just replace this devices and reset the stored codes.

      Keep us updated.

      Feb 10, 2011 | 2005 Nissan Altima

      1 Answer

      2001 silverado po300 code and po135 code changed 2 o2 sensors still coming up have not changed driver side o2s yet


      Well the P0300 code has nothing to do with your O2 sensors just a heads up.

      P0300: Random/Multiple Cylinder Misfire Detected

      When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the crankshaft position (CKP) sensor (POS) signal to vary, Powertrain Control Module (PCM) or Electronic Control Module (ECM) can determine that a misfire is occurring.

      Causes:
      - Improper spark plug
      - Insufficient compression
      - Incorrect fuel pressure
      - The injector circuit is open or shorted
      - Fuel injectors may be faulty
      - Intake air leak
      - The ignition signal circuit is open or shorted

      Solutions:
      - Perform Injector Service
      - Replace Spark Plugs
      - Replace Injectors
      - Replace Ignition Coils

      P0135: O2 Sensor Heated Circuit Malfunction Bank 1 Sensor 1

      The front heated oxygen sensor (or sensor 1) is placed into the exhaust manifold. It detects the amount of oxygen in the exhaust gas compared to the outside air. The heated oxygen sensor 1 has a closed-end tube made of ceramic zirconia. The zirconia generates voltage from approximately 1V in richer conditions to 0V in leaner conditions. The heated oxygen sensor 1 signal is sent to the ECM. The ECM adjusts the injection pulse duration to achieve the ideal air-fuel ratio. The ideal air-fuel ratio occurs near the radical change from 1V to 0V.

      Causes:
      - Harness or connectors (The sensor circuit is open or shorted)
      - Front Heated oxygen sensor (Bank 1) may be faulty

      Solutions:
      Replacing the O2 Sensor 1 usually takes care of the problem

      Jan 27, 2011 | 2001 Chevrolet Silverado 1500

      1 Answer

      I have a code reader and the code is P0171 P0174 System too lean. what makes the system too lean?


      P0171 - Fuel Injection System Too Lean Bank 1
      Possible Causes:
      - Intake air leaks
      - Front Heated oxygen sensor may be faulty
      - Injectors may be faulty
      - Exhaust gas leaks
      - Incorrect fuel pressure
      - Lack of fuel
      - Mass air flow sensor may be faulty
      - Incorrect PCV hose connection

      P0174 - Fuel Injection System Too Lean Bank 2
      Possible Causes:
      - Intake air leaks
      - Front Heated oxygen sensor may be faulty
      - Injectors may be faulty
      - Exhaust gas leaks
      - Incorrect fuel pressure
      - Lack of fuel
      - Mass air flow sensor may be faulty
      - Incorrect PCV hose connection

      What Causes These Codes: Fuel injection system does not operate properly. The amount of mixture ratio compensation is too large. (The mixture ratio is too rich.) The Powertrain Control Module (PCM) monitors the engine Air/Fuel mixture ratio, the actual mixture ratio can be brought closely to the theoretical mixture ratio based on the mixture ratio feedback signal from the heated oxygen sensors 1. The PCM calculates the necessary compensation to correct the offset between the actual and the theoretical ratios. In case the amount of the compensation value is extremely large (The actual mixture ratio is too lean.), the PCM judges the condition as the fuel injection system malfunction and light up the engine light. The codes is usually set when there is an intake leak after the air flow meter, before replacing any parts check for loose or broken hoses and intake gasket leak. On Ford some models dirty air filter, and dirty or faulty air flow sensor are the cause of the problem.

      Jan 16, 2011 | 2000 Ford Explorer

      1 Answer

      SERVICE ENGINE SOON LIGHT ON


      you need to change the oxygen sensor. it will soon cause you problems. after you need to take it in to  erase the code.

      Apr 20, 2009 | 1997 Chrysler Town & Country

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