Conditions for Setting the DTC

P0133

• The ECM detects that the HO2S 1 sensor rich-to-lean or lean-to-rich average response time is more than a calibrated value.
• DTC P0133 sets within 100 seconds when the above condition is met.

P0134

• The ECM detects that the HO2S 1 sensor is between 350-550 mV for 100 seconds.
• The throttle position (TP) indicated angle changes more than 5 percent, 1 time.
• DTC P0134 sets within 100 seconds when the above conditions are met.

P0140

• The ECM detects that the HO2S 1 sensor is between 410-490 mV.
• The TP indicated angle changes more than 5 percent 6 times.
• DTC P0140 sets within 100 seconds when the above conditions are met.

P1133

• The ECM detects that the HO2S 1 sensor rich-to-lean counts, or the lean-to-rich counts are less than a calibrated value.
• DTC P1133 sets within 100 seconds when the above condition is met.

P2270

• The ECM detects that the HO2S 2 voltage oscillations are slower than a calibrated value.
• DTC P2270 sets within 4 seconds when the above condition is met continuously, or within 50 seconds when the above condition is met cumulatively.

P2271

• The ECM detects that the HO2S 2 voltage oscillations are faster than a calibrated value.
• DTC P2271 sets within 4 seconds when the above condition is met continuously, or within 50 seconds when the above condition is met cumulatively.

P2A01

• The ECM detects that the sensor did not transition below 200 mV and above 730 mV during the passive test.
• One of the following tests fail:

  Lean Intrusive Test

  • The ECM detects that the sensor is more than 200 mV for 12 seconds.
  • The sensor is less than 200 mV.

  Rich Intrusive Test

  • The ECM detects that the sensor is less than 730 mV for 12 seconds.
  • The sensor is more than 730 mV.
• DTC P2A01 sets within 10 minutes when the above conditions are met.