DESCRIPTION
Refer to DTC P003012.
Click here
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 |
---|---|---|---|---|---|
P014C00 | O2 Sensor Slow Response - Rich to Lean Bank 1 Sensor 1 |
The rich to lean response rate deterioration level* value is standard or less (2 trip detection logic). |
| Comes on |
|
P014D00 |
O2 Sensor Slow Response - Lean to Rich Bank 1 Sensor 1 |
The lean to rich response rate deterioration level* value is standard or more (2 trip detection logic). |
| Comes on |
|
P015A00 |
O2 Sensor Delayed Response - Rich to Lean Bank 1 Sensor 1 |
The rich to lean delay level* value is standard or more (2 trip detection logic). |
| Comes on |
|
P015B00 |
O2 Sensor Delayed Response - Lean to Rich Bank 1 Sensor 1 |
The lean to rich delay level* value is standard or more (2 trip detection logic). |
| Comes on |
|
*: Calculated by ECM based on the air fuel ratio sensor (sensor 1) output.
MONITOR DESCRIPTION
After the engine has been warmed up, the ECM carries out air fuel ratio feedback control and maintains the air fuel ratio at the theoretical ratio. In addition, after all the preconditions have been met, active air fuel ratio control is performed for approximately 30 seconds. During active air fuel ratio control, the ECM measures the response of the air fuel ratio sensor (sensor 1) by increasing or decreasing a specific injection quantity based on the theoretical air fuel ratio learned during normal air fuel control. The ECM determines whether there is an air fuel ratio sensor (sensor 1) malfunction at the mid-point of active air fuel ratio control.
If the response of the air fuel ratio sensor (sensor 1) has decreased, DTC P014C00 and P014D00 are output.
If the air fuel ratio sensor (sensor 1) output timing is delayed, DTC P015A00 and P015B00 are output.
MONITOR STRATEGY
Related DTCs | P014C: Air fuel ratio sensor (sensor 1) response rate (rich to lean response rate) P014D: Air fuel ratio sensor (sensor 1) response rate (lean to rich response rate) P015A: Air fuel ratio sensor (sensor 1) response rate (rich to lean delay) P015B: Air fuel ratio sensor (sensor 1) response rate (lean to rich delay) |
Required Sensors/Components (Main) | Air fuel ratio sensor (sensor 1) |
Required Sensors/Components (Related) |
Crankshaft position sensor |
Frequency of Operation | Once per driving cycle |
Duration | 10 to 15 seconds |
MIL Operation | 2 driving cycles |
Sequence of Operation | None |
TYPICAL ENABLING CONDITIONS
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 (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) |
Active air fuel ratio control | Performing |
Active air fuel ratio control is performed when the following conditions are met |
- |
Auxiliary battery voltage |
11 V or higher |
Engine coolant temperature |
75°C (167°F) or higher |
Idle | Off |
Engine speed | 1000 rpm or higher, and less than 3000 rpm |
Air fuel ratio sensor (sensor 1) status |
Activated |
Fuel-cut |
Off |
Engine load |
10% or higher, and less than 100% |
Shift position | 2nd or higher |
Catalyst monitor | Not yet |
Mass air flow | 4 gm/sec or higher, and less than 16 gm/sec |
TYPICAL MALFUNCTION THRESHOLDS
P014C: Air Fuel Ratio Sensor (Sensor 1) Response Rate (Rich to Lean Response Rate)
Rich to Lean Response rate deterioration level |
11.7493 μA or less |
Lean to Rich Response rate deterioration level |
-13.2751 μA or more |
Rich to Lean delay level | 334.06 msec. or more |
Lean to Rich delay level | 334.06 msec. or more |
MONITOR RESULT
Refer to detailed information in Checking Monitor Status.
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Monitor ID | Test ID |
Scaling | Unit |
Description |
---|---|---|---|---|
$01 |
$98 | Multiply by 0.004 |
mA | Rich to Lean response rate deterioration level |
Monitor ID | Test ID |
Scaling | Unit |
Description |
---|---|---|---|---|
$01 |
$99 | Multiply by 0.004 |
mA | Lean to Rich response rate deterioration level |
Monitor ID | Test ID |
Scaling | Unit |
Description |
---|---|---|---|---|
$01 |
$95 | Multiply by 0.001 |
Second | Rich to Lean delay level |
Monitor ID | Test ID |
Scaling | Unit |
Description |
---|---|---|---|---|
$01 |
$96 | Multiply by 0.001 |
Second | Lean to Rich delay level |
CONFIRMATION DRIVING PATTERN
HINT:
Click here
Click here
HINT:
The test values for the test items RL RESPONSE RATE B1S1, LR RESPONSE RATE B1S1, RL DELAY B1S1 and LR DELAY B1S1 do not exist in the Details of O2 Sensor monitor at this time (the initial value of "0.000" is indicated in each test item).
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT:
Check the test values on the GTS by entering the following menus: Powertrain / Engine / Monitor / Current Monitor / O2 Sensor / Details / RL RESPONSE RATE B1S1, LR RESPONSE RATE B1S1, RL DELAY B1S1 and LR DELAY B1S1.
Click here
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.
Click here
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following procedure.
HINT:
PROCEDURE
1. | CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P014C00, P014D00, P015A00 OR P015B00) |
(a) Read the DTCs.
Powertrain > Engine > Trouble Codes
Result | Proceed to |
---|---|
DTC P014C00, P014D00, P015A00 or P015B00 is output |
A |
DTC P014C00, P014D00, P015A00 or P015B00 and other DTCs are output |
B |
HINT:
If any DTCs other than P014C00, P014D00, P015A00 or P015B00 are output, troubleshoot those DTCs first.
B |
![]() | GO TO DTC CHART |
|
2. |
INSPECT AIR FUEL RATIO SENSOR (SENSOR 1) (HEATER RESISTANCE) |
Click here
HINT:
Perform "Inspection After Repair" after replacing the air fuel ratio sensor (sensor 1).
Click here
NG | ![]() | REPLACE AIR FUEL RATIO SENSOR (SENSOR 1) |
|
3. |
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 |
NG | ![]() | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
CLEAR DTC |
(a) Clear the DTCs.
Powertrain > Engine > Clear DTCs(b) Turn the ignition switch off and wait for at least 30 seconds.
|
5. |
CHECK WHETHER DTC OUTPUT RECURS (DTC P014C00, P014D00, P015A00 OR P015B00) |
(a) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
(b) Read the pending DTCs.
Powertrain > Engine > Trouble Codes
Result | Proceed to |
---|---|
DTCs are not output | A |
DTC P014C00, P014D00, P015A00 or P015B00 is output |
B |
A |
![]() | CHECK FOR INTERMITTENT PROBLEMS |
|
6. |
REPLACE AIR FUEL RATIO SENSOR (SENSOR 1) |
Click here
HINT:
Perform "Inspection After Repair" after replacing the air fuel ratio sensor (sensor 1).
Click here
|
7. |
CLEAR DTC |
(a) Clear the DTCs.
Powertrain > Engine > Clear DTCs(b) Turn the ignition switch off and wait for at least 30 seconds.
|
8. |
CHECK WHETHER DTC OUTPUT RECURS (DTC P014C00, P014D00, P015A00 OR P015B00) |
(a) Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
(b) Read the pending DTCs.
Powertrain > Engine > Trouble Codes
Result | Proceed to |
---|---|
DTCs are not output | A |
DTC P014C00, P014D00, P015A00 or P015B00 is output |
B |
A |
![]() | END |
B |
![]() | CHECK ENGINE TO DETERMINE CAUSE OF EXTREMELY RICH OR LEAN ACTUAL AIR FUEL RATIO |