ON-BOARD DIAGNOSTIC
01–02–4
Meaning of fuel system loop status
• The following information is displayed on the tester.
— Feedback operating: HO2S being used for feedback is normal.
— Feedback stops: ECT is lower than the determined feedback zone.
— Feedback stops: Open loop due to driving condition.
— Feedback stops: Open loop due to detected system fault.
Sending Emission-related Malfunction Code
• The DTCs are shown below.
DTC table
×: Applicable
—: Not applicable
DTC No. Condition MIL DC
Monitor item
*
Memory
function
P0030 Front HO2S heater control circuit problem ON 2 HO2S heater ×
P0031 Front HO2S heater control circuit low ON 2 HO2S heater ×
P0032 Front HO2S heater control circuit high ON 2 HO2S heater ×
P0037 Rear HO2S heater control circuit low ON 2 HO2S heater ×
P0038 Rear HO2S heater control circuit high ON 2 HO2S heater ×
P0076 VDI solenoid valve control circuit low OFF 2 CCM ×
P0077 VDI solenoid valve control circuit high OFF 2 CCM ×
P0101 MAF sensor circuit range/performance problem ON 2 CCM ×
P0102 MAF sensor circuit low input ON 1 CCM ×
P0103 MAF sensor circuit high input ON 1 CCM ×
P0107 BARO sensor circuit low input ON 1 CCM ×
P0108 BARO sensor circuit high input ON 1 CCM ×
P0111 IAT sensor circuit range/performance problem ON 2 CCM ×
P0112 IAT sensor circuit low input ON 1 CCM ×
P0113 IAT sensor circuit high input ON 1 CCM ×
P0117 ECT sensor circuit low input ON 1 CCM ×
P0118 ECT sensor circuit high input ON 1 CCM ×
P0122 TP sensor No.1 circuit low input ON 1 CCM ×
P0123 TP sensor No.1 circuit high input ON 1 CCM ×
P0125 Insufficient coolant temperature for closed loop fuel control ON 2 CCM ×
P0126 Insufficient coolant temperature for stable operation ON 2 Thermostat ×
P0128 Coolant thermostat problem ON 2 Thermostat ×
P0130 Front HO2S circuit problem ON 2 HO2S ×
P0131 Front HO2S circuit low voltage ON 2 HO2S ×
P0132 Front HO2S circuit high voltage ON 2 HO2S ×
P0133 Front HO2S circuit slow response ON 2 HO2S ×
P0138 Rear HO2S circuit high voltage ON 2 HO2S ×
P0139 Rear HO2S circuit slow response ON 2 HO2S ×
P0171 System too lean ON 2 Fuel system ×
P0172 System too rich ON 2 Fuel system ×
P0222 TP sensor No.2 circuit low input ON 1 CCM ×
P0223 TP sensor No.2 circuit high input ON 1 CCM ×
P0300 Random misfire detected Flash/ON 1 or 2 Misfire ×
P0301 Front rotor misfire detected Flash/ON 1 or 2 Misfire ×
P0302 Rear rotor misfire detected Flash/ON 1 or 2 Misfire ×
P0327 KS circuit low input ON 1 CCM ×
P0328 KS circuit high input ON 1 CCM ×
P0335 Eccentric shaft position sensor circuit problem ON 1 CCM ×
P0336
Eccentric shaft position sensor circuit range/performance
problem
ON 1 CCM ×
P0410 AIR system problem ON 2 AIR system ×
P0420 Catalyst system efficiency below threshold ON 2 Catalyst ×
P0441 EVAP system incorrect purge flow ON 2 EVAP system ×
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