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Diagnostic Aids

WARNING: This page is about a different car, the 2002 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. Bank 1 refers to bank that includes cylinder No. 1 (RH).
  2. Bank 2 refers to bank that does not include cylinder No. 1 (LH).
  3. Sensor 1 refers to sensor closest to engine body.
  4. Sensor 2 refers to sensor farthest from engine body.
  5. Read freeze frame data using hand-held tester or OBD-II scan tool, as freeze frame data records engine conditions when a malfunction is detected. When troubleshooting, it is useful to determine whether vehicle was running or stopped, engine was warmed up or not, air-fuel ratio was lean or rich, etc. at time of malfunction.
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