Conditions for Setting the DTC

P0133

• The control module detects that the HO2S 1 rich-to-lean or lean-to-rich average response time is more than 0.14 second.
• DTC P0133 sets within 60 seconds when the above condition is met.

P0134

• The control module detects that the HO2S 1 parameter is between 400-500 mV.
• The Throttle Position (TP) Indicated Angle parameter changes more than 5 percent.
• DTC P0134 sets within 101 seconds when the above conditions are met.

P0140

• The control module detects that the HO2S 1 parameter is between 400-500 mV.
• The TP Indicated Angle parameter changes more than 5 percent 5 times.
• DTC P0140 sets within 101 seconds when the above conditions are met.

P1133

• The control module detects that the HO2S 1 rich-to-lean counts, or the lean-to-rich counts are less than a calibrated value.
• DTC P1133 sets within 60 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.

P2A00

• The control module detects that the Loop Status parameter is open.
• DTC P2A00 sets within 5 seconds when the above condition is met.

P2A01

• The control module detects that the HO2S 2 did not transition below 299 mV and above 751 mV during the passive test.
• One of the following tests fail once per trip/runs until pass or fail reporting:
  • Lean Intrusive Test-The control module detects that the HO2S 2 is more than 751 mV for 8 seconds.
  • Rich Intrusive Test-The control module detects that the HO2S 2 is less than 299 mV for 8 seconds.
• DTC P2A01 sets within 2 minutes when the above conditions are met.
• The control module detects that the Loop Status parameter is open by not meeting the voltage criteria to enable Close Loop fueling.
  • Voltage cannot be between 250-600 mV for 10 seconds after the O2 has seen a ready to go Closed Loop command.
• DTC P2A01 sets within 5 seconds when the above condition is met.