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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 190 (Engine Control System Self Diagnostics (1GR-FE)) >> Diagnostic Tests >> DTC P2237, DTC P2238, DTC P2239, DTC P2240, DTC P2241, DTC P2242, DTC P2251, DTC P2252, DTC P2253, DTC P2254, DTC P2255 Or DTC P2256 >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2003 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

This DTC is recorded when A/F sensor has a malfunction, although the caption is oxygen sensor. This DTC uses two-trip detection logic. Refer to CIRCUIT DESCRIPTION  under DTCs P2195, P2196, P2197 & P2198: OXYGEN SENSOR SIGNAL STUCK (BANK 1 &/OR 2 SENSOR 1).

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