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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 115 (Engine Control System Self Diagnostics - 4-Cylinder) >> Diagnostic Tests >> DTC P0031: Oxygen (A/F) Sensor Heater Circuit Low (Bank No. 1 Sensor No. 1) & DTC P0032: Oxygen (A/F) Sensor Heater Circuit High (Bank No. 1 Sensor No. 1) >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2003 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.

For circuit description, see DTC P2195, DTC P2196, DTC P2237, DTC P2238, DTC P2239, DTC P2251, DTC P2252 & DTC P2253 .

Detecting condition of DTC P0031 is when the heater current exceeds 19.7 A while the heater operates. Detecting condition of DTC P0032 is when heater current is 3 A or less when the heater does not operate.

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