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Home >> Acura >> 2000 >> 3.2TL >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0133: Primary Ho2S-1 Slow Response

DTC P0133: Primary Ho2S-1 Slow Response

NOTE: Trouble shoot DTC P0131 and P0132, if present, before proceeding.
  1. When DTC P0133 is set, a slow response has been detected. Check for deterioration of HO2S-1 and HO2S-1 heater or an exhaust leak. Replace as necessary.
  2. Perform PCM reset procedure. See PCM RESET PROCEDURE/CLEARING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM. Start engine and run at 3000 RPM, with no load and transmission in Park or Neutral, until radiator fan comes on. Using scan tool, check for temporary DTC P0133. If DTC P0133 is present, replace HO2S-1. If DTC P0133 is not present, go to next step.
  3. Test drive vehicle at a constant 55 MPH, with transmission in D4 position until readiness code comes on. If DTC P0133 sets, replace HO2S-1. If DTC P0133 does not set, problem is intermittent. System is okay at this time. Check for poor connections or loose wires between suspect HO2S-1 and PCM. See WIRING DIAGRAMS article.
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