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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 98 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P0130, DTC P0150, DTC P2195, DTC P2196, DTC P2197 Or DTC P2198 >> Diagnosis & Repair

Diagnosis & Repair

WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.
  1. Retrieve trouble codes. See RETRIEVING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM. If any other codes are displayed other than DTC P0130, P0150, P2195, P2196, P2197 or P2198, diagnose and repair those codes first. If only DTC P0130, P0150, P2195, P2196, P2197 or P2198 are displayed, go to next step.
  2. Start engine and raise engine speed to 2500 RPM for about 90 seconds. Let engine idle. Using scan tool, monitor each heated oxygen sensor No. 1 output voltage. Voltage should alternate repeatedly between less than .4 volt and more than .55 volt. See Fig 1. If voltage is as specified, go to step  7. If voltage is not as specified, go to next step.
    Fig 1: Heated Oxygen Sensor Output Voltage
    G00232360Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Check for open or short circuit in wiring harness between ECM and suspect heated oxygen sensor. See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. Repair wiring as necessary. If wiring harness is okay, go to next step.
  4. Ensure oil dipstick, oil filler cap, PCV system and all other air induction system components are intact and operating properly. If problem exists, repair as necessary. If problem does not exist, go to next step.
  5. Check fuel pressure. See FUEL SYSTEM in BASIC DIAGNOSTIC PROCEDURES article. If fuel pressure is not within specification, repair as necessary. If fuel pressure is within specification, go to next step.
  6. Check fuel injectors. See FUEL SYSTEM in appropriate SYSTEM & COMPONENT TESTING article. If problem exists, repair as necessary. If problem does not exist, replace suspect heated oxygen sensor.
  7. Perform test drive confirmation, then go to next step. See CONFIRMATION DRIVING PATTERN .
  8. Clear and recheck for DTCs. If any other codes are displayed other than DTC P0130, P0150, P2195, P2196, P2197 or P2198, diagnose and repair those codes first. If DTC P0130, P0150, P2195, P2196, P2197 or P2198 are displayed, replace suspect heated oxygen sensor. If DTC P0130, P0150, P2195, P2196, P2197 or P2198 are not displayed, check for intermittent problems.
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