DESCRIPTION
Refer to DTC P003012.
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HINT:
Although the DTC titles say O2 sensor, these DTCs relate to the air fuel ratio sensor (sensor 1).
DTC No. | Detection Item |
DTC Detection Condition | Trouble Area |
MIL | Note |
---|---|---|---|---|---|
P223711 | A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Short to Ground |
The A1A+ voltage is 1.26 V or less for 5 seconds or more (2 trip detection logic). |
| Comes on |
|
P223712 |
A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Short to Battery |
The A1A+ voltage is higher than 4.47 V for 5 seconds or more (2 trip detection logic). |
| Comes on |
|
P223713 |
A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Open |
An open or ground short in the circuit between terminals A1A+ and A1A- of the air fuel ratio sensor (sensor 1) while the engine is running (2 trip detection logic). |
| Comes on |
|
P223716 |
A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Voltage Below Threshold |
Difference between terminals A1A+ and A1A- is 0.2 V or less for 5 seconds or more (2 trip detection logic). |
| Comes on |
|
P223717 |
A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Voltage Above Threshold |
Difference between terminals A1A+ and A1A- is higher than 1.04 V for 5 seconds or more (2 trip detection logic). |
| Comes on |
|
P22371B |
A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Resistance Above Threshold |
The air fuel ratio sensor (sensor 1) impedance is higher than 185 Ω (2 trip detection logic). |
| Comes on |
|
P225111 |
O2 Sensor Negative Current Control Bank 1 Sensor 1 Circuit Short to Ground |
The A1A- voltage is 1.07 V or less for 5 seconds or more (2 trip detection logic). |
| Comes on |
|
P225112 |
O2 Sensor Negative Current Control Bank 1 Sensor 1 Circuit Short to Battery |
The A1A- voltage is higher than 3.93 V for 5 seconds or more (2 trip detection logic). |
| Comes on |
|
MONITOR DESCRIPTION
These DTCs are stored when there is an open or short in the air fuel ratio sensor (sensor 1) circuit, or the air fuel ratio sensor (sensor 1) output value is abnormal. The voltage of the air fuel ratio sensor (sensor 1) is monitored while the ignition switch is ON, and the impedance (impedance is an electrical term that indicates the difficulty of flow of current) is checked while engine running. If the voltage of the air fuel ratio sensor (sensor 1) is outside the normal range, or the impedance is outside the normal range, the ECM illuminates the MIL and stores a DTC.
MONITOR STRATEGY
Related DTCs | P2237: Air fuel ratio sensor (sensor 1) circuit continuity check (circuit open) P2238: Air fuel ratio sensor (sensor 1) impedance check (high impedance) P2238: Air fuel ratio sensor (sensor 1) range check (A1A+ low voltage) P2238: Air fuel ratio sensor (sensor 1) correlation (A1A+ and A1A-) P2239: Air fuel ratio sensor (sensor 1) range check (A1A+ high voltage) P2239: Air fuel ratio sensor (sensor 1) correlation (A1A+ and A1A-) P2252: Air fuel ratio sensor (sensor 1) range check (A1A- low voltage) P2253: Air fuel ratio sensor (sensor 1) range check (A1A- high voltage) |
Required Sensors/Components (Main) | Air fuel ratio sensor (sensor 1) |
Required Sensors/Components (Related) |
Engine coolant temperature sensor Crankshaft position sensor |
Frequency of Operation | Continuous |
Duration | 10 seconds: P2237, P2238 (air fuel ratio sensor (sensor 1) high impedance) 5 seconds: Others |
MIL Operation |
2 driving cycles |
Sequence of Operation |
None |
TYPICAL ENABLING CONDITIONS
P2237 and P2238
Monitor runs whenever the following DTCs are not stored |
P0010, P1360, P1362, P1364, P1366, P2614 (Motor drive VVT system control module) P0011 (VVT system - advance) P0012 (VVT system - retard) P0013 (Exhaust VVT oil control solenoid) P0014 (Exhaust VVT system - advance) P0015 (Exhaust VVT system - retard) P0016 (VVT system - misalignment) P0017 (Exhaust VVT system - misalignment) P0031, P0032, P101D (Air fuel ratio sensor (sensor 1) heater) P0037, P0038, P102D (Air fuel ratio sensor (sensor 2) heater) P0087, P0088, P0191, P0192, P0193 (Fuel pressure sensor (for high pressure side)) P00FE, P0441, P0443 (EVAP system) P0101, P0102, P0103 (Mass air flow meter) P0106, P0107, P0108 (Manifold absolute pressure) P0111, P0112, P0113 (Intake air temperature sensor) P0116, P0117, P0118 (Engine coolant temperature sensor) P0121, P0122, P0123, P0222, P0223, P2135 (Throttle position sensor) P0125 (Insufficient coolant temperature for closed loop fuel control) P0128 (Thermostat) P0136, P013A, P2270, P2271, P22AB, P22AC, P22AD, P22B3, P22B4 (Air fuel ratio sensor (sensor 2)) P0171, P0172 (Fuel system) P0201, P0202, P0203, P0204, P062D, P21CF, P21D0, P21D1, P21D2 (Fuel injector) P0300, P0301, P0302, P0303, P0304 (Misfire) P0327, P0328 (Knock control sensor) P0335, P0337, P0338 (Crankshaft position sensor) P0340, P0342, P0343 (Camshaft position sensor) P0365, P0367, P0368 (Exhaust camshaft position sensor) P0400 (EGR system) P0401 (EGR system (closed)) P0489, P0490 (EGR control circuit) P0500 (Vehicle speed sensor) P0657, P0658, P2102, P2103, P2111, P2112, P2119 (Throttle actuator) P107B, P107C, P107D (Fuel pressure sensor (for low pressure side)) P11EA, P11EC, P11ED, P11EE, P11EF, P219A, P219C, P219D, P219E, P219F (Air-fuel ratio imbalance) P1235 (High pressure fuel pump circuit) P2228, P2229 (Atmospheric pressure sensor) |
Engine | Running |
Auxiliary battery voltage |
11 V or higher |
Ignition switch |
ON |
Time after ignition switch is off to ON |
5 seconds or more |
Fuel cut | Not executed |
Auxiliary battery voltage | 10.5 V or higher |
Ignition switch | ON |
Time after ignition switch is off to ON |
0.5 seconds or more |
Air fuel ratio sensor (sensor 1) circuit fail (P2237, P2240) (Pending / MIL) |
Not detected |
Air fuel ratio sensor (sensor 1) positive/negative current control circuit correlation fail (P2238, P2239, P2241, P2242) (Pending / MIL) |
Not detected |
Air fuel ratio sensor (sensor 1) negative current control circuit range check fail (P2252, P2253, P2255, P2256) (Pending / MIL) |
Not detected |
Auxiliary battery voltage | 10.5 V or higher |
Ignition switch | ON |
Time after ignition switch is off to ON |
0.5 seconds or more |
Air fuel ratio sensor (sensor 1) circuit fail (P2237, P2240) (Pending / MIL) |
Not detected |
Air fuel ratio sensor (sensor 1) positive current control circuit range check fail (P2238, P2239, P2241, P2242) (Pending / MIL) |
Not detected |
Air fuel ratio sensor (sensor 1) negative current control circuit range check fail (P2252, P2253, P2255, P2256) (Pending / MIL) |
Not detected |
Auxiliary battery voltage | 10.5 V or higher |
Ignition switch | ON |
Time after ignition switch is off to ON |
0.5 seconds or more |
Air fuel ratio sensor (sensor 1) circuit fail (P2237, P2240) (Pending / MIL) |
Not detected |
Air fuel ratio sensor (sensor 1) positive/negative current control circuit correlation fail (P2238, P2239, P2241, P2242) (Pending / MIL) |
Not detected |
Air fuel ratio sensor (sensor 1) positive current control circuit range check fail (P2238, P2239, P2241, P2242) (Pending / MIL) |
Not detected |
TYPICAL MALFUNCTION THRESHOLDS
P2237: Air Fuel Ratio Sensor (Sensor 1) Circuit Continuity Check (Circuit Open)
Air fuel ratio sensor (sensor 1) impedance | Higher than 440 Ω |
Air fuel ratio sensor (sensor 1) impedance | Higher than 63 Ω |
A1A+ terminal voltage | 1.26 V or less |
Difference between A1A+ terminal and A1A- terminal voltage |
0.2 V or less |
A1A+ terminal voltage | Higher than 4.47 V |
Difference between A1A+ terminal and A1A- terminal voltage |
Higher than 1.04 V |
A1A- terminal voltage | 1.07 V or less |
A1A- terminal voltage | Higher than 3.93 V |
CONFIRMATION DRIVING PATTERN
HINT:
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HINT:
GTS Display |
Description |
---|---|
NORMAL |
|
ABNORMAL |
|
INCOMPLETE |
|
HINT:
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
WIRING DIAGRAM
Refer to DTC P003012.
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CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following procedure.
HINT:
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PROCEDURE
1. | CHECK TERMINAL VOLTAGE (AIR FUEL RATIO SENSOR (SENSOR 1) VOLTAGE) |
*a | Front view of wire harness connector (to Air Fuel Ratio Sensor (Sensor 1)) |
HINT:
Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.
(a) Disconnect the air fuel ratio sensor (sensor 1) connector.
(b) Turn the ignition switch to ON.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection | Condition |
Specified Condition |
---|---|---|
C56-3 (A1A+) - Body ground |
Ignition switch ON | 2.8 to 3.0 V |
C56-4 (A1A-) - Body ground |
Ignition switch ON | 2.3 to 2.7 V |
C56-3 (A1A+) - C56-4 (A1A-) |
Ignition switch ON | 0.1 to 0.7 V |
HINT:
Perform "Inspection After Repair" after replacing the air fuel ratio sensor (sensor 1).
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OK | REPLACE AIR FUEL RATIO SENSOR (SENSOR 1) |
|
2. |
CHECK HARNESS AND CONNECTOR (AIR FUEL RATIO SENSOR (SENSOR 1) - ECM) |
(a) Disconnect the air fuel ratio sensor (sensor 1) connector.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition |
Specified Condition |
---|---|---|
C56-1 (HA1A) - C76-9 (HA1A) |
Always | Below 1 Ω |
C56-3 (A1A+) - C76-95 (A1A+) |
Always | Below 1 Ω |
C56-4 (A1A-) - C76-94 (A1A-) |
Always | Below 1 Ω |
C56-1 (HA1A) or C76-9 (HA1A) - Body ground and other terminals |
Always | 10 kΩ or higher |
C56-3 (A1A+) or C76-95 (A1A+) - Body ground and other terminals |
Always | 10 kΩ or higher |
C56-4 (A1A-) or C76-94 (A1A-) - Body ground and other terminals |
Always | 10 kΩ or higher |
OK | REPLACE ECM |
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR |