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Experience:  GM Grand Master Technician 2007. 14 years experience.
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I have an 08 chevy cobalt 2.2 Im running multiple codes.

Customer Question

I have an 08 chevy cobalt 2.2 Im running multiple codes. P0237, p0171, p0302, p013f, p2270. Put mew spark plugs new coils. Car runs rough at idle but more smooth while driving.
Submitted: 11 months ago.
Category: Chevy
Expert:  Roy replied 11 months ago.

good evening my name is ***** ***** I will assist

below is the description for the po12f which also covers 2270

I am looking up the others

Roy

DTC P0133, P0134, P013A, P013B, P013E, P013F, P0140, P1133, P2270, P2271, or P2A00

Diagnostic Instructions

DTC Descriptors

DTC P0133

  • HO2S Slow Response Sensor 1

DTC P0134

  • HO2S Circuit Insufficient Activity Sensor 1

DTC P013A

  • HO2S Slow Response Rich to Lean Sensor 2

DTC P013B

  • HO2S Slow Response Lean to Rich Sensor 2

DTC P013E

  • HO2S Delayed Response Rich to Lean Sensor 2

DTC P013F

  • HO2S Delayed Response Lean to Rich Sensor 2

DTC P0140

  • HO2S Circuit Insufficient Activity Sensor 2

DTC P1133

  • HO2S Insufficient Switching Sensor 1

DTC P2270

  • HO2S Signal Stuck Lean Sensor 2

DTC P2271

  • HO2S Signal Stuck Rich Sensor 2

DTC P2A00

  • HO2S Circuit Closed Loop (CL) Performance Sensor 1

Diagnostic Fault Information

Typical Scan Tool Data

Circuit/System Description

Heated oxygen sensors (HO2S) are used for fuel control and post catalyst monitoring. Each HO2S compares the oxygen content of the surrounding air with the oxygen content in the exhaust stream. The HO2S must reach operating temperature to provide an accurate voltage signal. Heating elements inside the HO2S minimize the time required for the sensors to reach operating temperature. The engine control module (ECM) supplies the HO2S with a reference, or bias, voltage of about 450 mV. When the engine is first started, the ECM operates in Open Loop, ignoring the HO2S voltage signal. Once the HO2S reaches operating temperature and Closed Loop is achieved, the HO2S generates a voltage within a range of 0-1,000 mV that fluctuates above and below bias voltage. High HO2S voltage indicates a rich exhaust stream. Low HO2S voltage indicates a lean exhaust stream.

Conditions for Running the DTC

P0133

  • DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128, P0201, P0202, P0203, P0204, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0455, P0496, P1516, P2101, P2119, P2135, P2176 are not set.
  • The Engine Coolant Temperature (ECT) Sensor parameter is more than 70°C (158°F).
  • The Ignition 1 Signal parameter is between 10-18 volts.
  • The Fuel Level Sensor parameter is more than 10 percent.
  • The Engine Run Time parameter is more than 200 seconds.
  • The Engine Speed parameter is between 1,000-3,500 RPM.
  • The Manifold Absolute Pressure (MAP) Sensor parameter is more than 30 kPa.
  • The Mass Airflow (MAF) Sensor parameter is between 11-50 g/s.
  • The Loop Status parameter is Closed.
  • The Throttle Position (TP) Indicated Angle parameter is more than 5 percent.
  • DTC P0133 runs once per drive cycle when the above conditions are met for 2 seconds.

P0134

  • DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128, P0201, P0202, P0203, P0204, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0455, P0496, P1516, P2101, P2119, P2135, P2176 are not set.
  • The Engine Coolant Temperature (ECT) Sensor parameter is more than 70°C (158°F).
  • The Ignition 1 Signal parameter is between 10-18 volts.
  • The engine run time is more than 200 seconds.
  • DTC P0134 runs continuously when the above conditions are met.

P013A

  • DTCs P0030, P0036, P0053, P0054, P0101, P0102, P0103, P0106, P0107, P0108, P0120, P0121, P0122, P0123, P0131, P0132, P0133, P0134, P0135, P0137, P0138, P013A, P013B, P013E, P013F, P0140, P0141, P0171, P0172, P0201, P0202, P0203, P0204, P0220, P0222, P0223, P0300, P0442, P0443, P0446, P0449, P0455, P0496, P1133, P1174, P1516, P2101, P2119, P2135, P2176, P2270, P2271, P2A00 are not set.
  • The system voltage is between 10-18 volts.
  • The learned heater resistance is valid.
  • The ICAT MAT Burn Off delay is not active.
  • The Green O2 Sensor Condition is not present.
  • The fuel level is more than 10 percent or the fuel level data fault is active.
  • Engine run time is equal to or more than 40 seconds. THEN
  • DFCO is active.
  • The accelerator pedal position (APP) is stable.
  • The torque converter clutch (TCC) is locked.
  • DTCs P013E and P2270 have run and passed.
  • This DTC runs once per trip.

P013B

  • DTCs P0030, P0036, P0053, P0054, P0101, P0102, P0103, P0106, P0107, P0108, P0120, P0121, P0122, P0123, P0131, P0132, P0133, P0134, P0135, P0137, P0138, P013A, P013B, P013E, P013F, P0140, P0141, P0171, P0172, P0201, P0202, P0203, P0204, P0220, P0222, P0223, P0300, P0442, P0443, P0446, P0449, P0455, P0496, P1133, P1174, P1516, P2101, P2119, P2135, P2176, P2270, P2271, P2A00 are not set.
  • The system voltage is between 10-18 volts.
  • The learned heater resistance is valid.
  • The ICAT MAT Burn Off delay is not active.
  • The Green O2 Sensor Condition is not present.
  • The fuel level is more than 10 percent, or the fuel level data fault is active.
  • Engine run time is equal to or more than 40 seconds. THEN
  • DTCs P013A, P013E, P013F, P2270, and P2271 have run and passed.
  • This DTC runs once per trip.

P013E

  • DTCs P0030, P0036, P0053, P0054, P0101, P0102, P0103, P0106, P0107, P0108, P0120, P0121, P0122, P0123, P0131, P0132, P0133, P0134, P0135, P0137, P0138, P013A, P013B, P013E, P013F, P0140, P0141, P0171, P0172, P0201, P0202, P0203, P0204, P0220, P0222, P0223, P0300, P0442, P0443, P0446, P0449, P0455, P0496, P1133, P1174, P1516, P2101, P2119, P2135, P2176, P2270, P2271, P2A00 are not set.
  • The system voltage is between 10-18 volts.
  • The learned heater resistance is valid.
  • The ICAT MAT Burn Off delay is not active.
  • The Green O2 Sensor Condition is not present.
  • The fuel level is more than 10 percent, or the fuel level data fault is active.
  • Engine run time is equal to or more than 40 seconds. THEN
  • DFCO is active.
  • The APP is stable.
  • The TCC is locked.
  • DTC P2270 has run and passed.
  • This DTC runs once per trip.

P013F

  • P0030, P0036, P0053, P0054, P0101, P0102, P0103, P0106, P0107, P0108, P0120, P0121, P0122, P0123, P0131, P0132, P0133, P0134, P0135, P0137, P0138, P013A, P013B, P013E, P013F, P0140, P0141, P0171, P0172, P0201, P0202, P0203, P0204, P0220, P0222, P0223, P0300, P0442, P0443, P0446, P0449, P0455, P0496, P1133, P1174, P1516, P2101, P2119, P2135, P2176, P2270, P2271, P2A00 are not set.
  • The system voltage is between 10-18 volts.
  • The learned heater resistance is valid.
  • The ICAT MAT Burn Off delay is not active.
  • The Green O2 Sensor Condition is not present.
  • The fuel level is more than 10 percent or the fuel level data fault is active.
  • Engine run time is equal to or more than 40 seconds. THEN
  • DTCs P013A, P013E, P2270, and P2271 have run and passed.
  • This DTC runs once per trip.

P0140

  • DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128, P0201, P0202, P0203, P0204, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0455, P0496, P1516, P2101, P2119, P2135, P2176 are not set.
  • The ECT Sensor parameter is more than 70°C (158°F).
  • The Ignition 1 Signal parameter is between 10-18 volts.
  • The Engine Run Time parameter is more than 200 seconds.
  • The Loop Status parameter is closed.
  • DTC P0140 runs once per drive cycle when the above conditions are met.

P1133

  • DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128, P0201, P0202, P0203, P0204, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0455, P0496, P1516, P2101, P2119, P2135, P2176 are not set.
  • The ECT Sensor parameter is more than 70°C (158°F).
  • The Engine Speed parameter is between 1,500-3,500 RPM.
  • The Ignition 1 Signal parameter is between 10-18 volts.
  • The Engine Run Time parameter is more than 200 seconds.
  • The Loop Status parameter is Closed.
  • The TP Indicated Angle parameter is more than 5 percent.
  • The Fuel Level Sensor parameter is more than 10 percent.
  • The MAP Sensor parameter is more than 30 kPa.
  • The MAF Sensor parameter is between 11-50 g/s.
  • DTC P1133 runs once per drive cycle when the above conditions are met for 2 seconds.

P2270

  • DTCs P0030, P0036, P0053, P0054, P0101, P0102, P0103, P0106, P0107, P0108, P0120, P0121, P0122, P0123, P0131, P0132, P0133, P0134, P0135, P0137, P0138, P013A, P013B, P013E, P013F, P0140, P0141, P0171, P0172, P0201, P0202, P0203, P0204, P0220, P0222, P0223, P0300, P0442, P0443, P0446, P0449, P0455, P0496, P1133, P1174, P1516, P2101, P2119, P2135, P2176, P2270, P2271, P2A00 are not set.
  • The system voltage is between 10-18 volts.
  • The learned heater resistance is valid.
  • The ICAT MAT Burn Off delay is not active.
  • The Green O2 Sensor Condition is not present.
  • The fuel level is more than 10 percent or the fuel level data fault is active.
  • Engine run time is equal to or more than 40 seconds. THEN
  • The engine speed is between 1,100-2,100 RPM.
  • The airflow is equal to or more than 3 g/s and equal to or less than 12 g/s.
  • The vehicle speed is equal to or more than 73 km/h (45.4 mph) and equal to or less than 120 km/h (74.6 mph).
  • The short term fuel trim is equal to or more than 0.9, and equal to or less than 1.065.
  • The fuel state is in Closed Loop.
  • The evaporative emission (EVAP) diagnostics are not in control of purge.
  • The Ethanol Estimate is not in progress.
  • The Post Cell Enabled.
  • The Power Take-Off is not active.
  • The exhaust gas recirculation (EGR) diagnostic is not intrusive.
  • The Heater Warm-up Delay is more than 120 seconds.
  • The catalytic converter temperature is equal to or more than 650°C (1,202°F), and equal to less than 900°C (1,652°F).
  • This DTC runs once per trip when all of the above conditions have been met for 2 seconds.

P2271

Expert:  Roy replied 11 months ago.

can you verify the 237?? does not show in my list of codes

the 302 is a missfire on number 2 cylinder

Roy

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