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Home >> Suzuki >> 2001 >> XL-7 Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 17 (Engine Controls - Self-Diagnostics) >> Diagnostic Tests >> DTC P0133: Heated Oxygen Sensor Bank No. 1 (Left Bank), Sensor No. 1 (B1 S1), Slow Response >> Diagnosis & Repair Procedure

Diagnosis & Repair Procedure

WARNING: This page is about a different car, the 2002 Suzuki Grand Vitara. However, it is still accessible from the selected car via links, so may be relevant.
  1. Check for DTC P0155. See RETRIEVING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM. If DTC P0155 is not set, go to next step. If DTC P0155 is set, go to DTC P0155: HO2S BANK NO. 2 (RIGHT BANK), SENSOR NO. 1 (B2 S1), HEATER CIRCUIT MALFUNCTION  .
  2. Perform DTC CONFIRMATION TEST  . If DTC P0133 is set, go to next step. If DTC P0133 is not set, problem is intermittent. System is okay at this time. See INTERMITTENTS TROUBLE SHOOTING - NO CODES article.
  3. Check for short or open in Red wire between HO2S Bank 1, Sensor 1 and ECM (PCM) 26-pin connector C51-3 terminals No. 4. Also check for short or open in Gray/Yellow wire between HO2S Bank 1, Sensor 1 and ECM (PCM) 26-pin connector C51-3 terminals No. 21. See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. Repair as necessary and go to DTC CONFIRMATION TEST  . If wires are okay, go to next step.
  4. Replace HO2S Bank 1, Sensor 1 and go to DTC CONFIRMATION TEST  . If problem still persists, replace ECM (PCM) and go to DTC CONFIRMATION TEST  .
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