LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2005 >> Matrix Base, FWD, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Control System (SFI) (1ZZ-FE(4WD)) - Diagnostics) >> SFI System (1ZZ-FE (4WD)) >> DTC P0031, P0032, P0037, P0038: Oxygen Sensor Heater Control Circuit Low/High (Bank 1 Sensor 1 & 2) >> Monitor Strategy
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Monitor Strategy

WARNING: This page is about a different variant/trim than selected.
MONITOR STRATEGY CHART

Related DTCs P0031: HO2 sensor heater (sensor 1) range check (low current)
P0032: HO2 sensor heater (sensor 1) range check (high current)
P0037: HO2 sensor heater (sensor 2) range check (low current)
P0038: HO2 sensor heater (sensor 2) range check (high current)
Required Sensors/Components (Main) HO2 sensor heater
Required Sensors/Components (Related) Vehicle Speed Sensor (VSS)
Frequency of Operation Continuous
Duration 0.3 seconds
MIL Operation Immediate
Sequence of Operation None