DTC P0133(61-1): | Primary HO2S(Sensor 1) Slow Response |
1. | Reset the ECM/PCM. |
2. | Start the engine. Hold the engine at 3,000 rpm (min-1) with no load (in Park or neutral) until the radiator fan comes on. |
3. | Test-drive under the following conditions:
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4. | Check for a Temporary DTC with the scan tool. Is Temporary DTC P0133 indicated? YES - Replace the Primary HO2S (Sensor 1).n NO - Intermittent failure, system is OK at this time. Check for poor connections or loose wires, the Primary HO2S (Sensor 1) and the ECM/ PCM.n |