Honda Element. Manual - part 12

 

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Honda Element. Manual - part 12

 

 

Fig. 33: Secondary Heated Oxygen Sensor Output Voltage - Graph 

General Description 

The secondary heated oxygen sensor (HO2S) (sensor 2) detects the oxygen content in the exhaust gas 
downstream of the three way catalytic converter (TWC) during stoichiometric air/fuel ratio feedback control 
based on the air/fuel ratio (A/F) sensor (sensor 1) output voltage. The secondary HO2S controls the air/fuel ratio 
from the A/F sensor output voltage to optimize TWC efficiency. 

After current is applied to the secondary HO2S heater, if the secondary HO2S output continues high (rich) 
exceeding the upper limit used during feedback control, a malfunction is detected and a DTC is stored. 

Monitor Execution, Sequence, Duration, DTC Type, OBD Status 

MONITOR DESCRIPTION 

Enable Conditions 

ENABLE CONDITIONS 

Execution

Continuous

Sequence

None

Duration

5 seconds or more

DTC Type

Two drive cycles, MIL ON

OBD Status

PASSED/FAILED/EXECUTING/OUT OF (TEST) CONDITION

Condition

Minimum

Maximum

Elapsed time that 
secondary HO2S activity 
is not monitored after 

15 seconds

-

 

2007 Honda Element EX 

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element

  

Malfunction Threshold 

The secondary HO2S output voltage is 1.270 V or more for at least 5 seconds. 

Driving Pattern 

1. Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator 

fan comes on.  

2. Then, drive immediately at a steady engine speed between 1,500 - 3,000 rpm for at least 1 minute. 

Drive the vehicle in this manner only if the traffic regulations and ambient conditions allow.  

Diagnosis Details 

Conditions for illuminating the MIL 

When a malfunction is detected during the first drive cycle, a Temporary DTC is stored in the ECM/PCM 
memory. If the malfunction recurs during the next (second) drive cycle, the MIL comes on and the DTC and the 
freeze frame data are stored. 

Conditions for clearing the MIL 

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the diagnostic 
runs. 

The MIL, the DTC, the Temporary DTC, and the freeze frame data can be cleared by using the scan tool Clear 
command or by disconnecting the battery. 

DTC P0139 (63): ADVANCED DIAGNOSTICS 

DTC P0139: SECONDARY HEATED OXYGEN SENSOR (SECONDARY HO2S (SENSOR 2)) SLOW 
RESPONSE 

starting the engine
Engine coolant 
temperature

156 °F (69 °C)

-

Intake air temperature

-13 °F (-25 °C)

-

Fuel trim

0.69

1.47

Fuel feedback

Closed loop

No active DTCs

P0010, P0011, P0101, P0102, P0103, P0107, P0108, P0112, P0113, P0133, 
P0134, P0135, P0141, P0171, P0172, P0300, P0301, P0302, P0303, P0304, 
P0340, P0341, P0344, P0443, P0496, P0497, P1009, P1128, P1129, P1157, 
P1172, P145C, P2195, P2238, P2252, P2646, P2647, P2648, P2649, P2A00

Other

Other than at idle

 

2007 Honda Element EX 

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element

  

Fig. 34: Secondary Heated Oxygen Sensor 2 Heater Circuit Diagram 

Fig. 35: Secondary Heated Oxygen Sensor Output Voltage - Graph 

General Description 

The secondary heated oxygen sensor (HO2S) (sensor 2) detects the oxygen content in the exhaust gas 
downstream of the three way catalytic converter (TWC) during stoichiometric air/fuel ratio feedback control. 
The secondary HO2S controls the air/fuel ratio with the A/F sensor output voltage to optimize TWC efficiency. 

If the response time of the secondary HO2S becomes longer than the specified time after current to the 
secondary HO2S heater is applied, a malfunction is detected and a DTC is stored. 

Monitor Execution, Sequence, Duration, DTC Type, OBD Status 

MONITOR DESCRIPTION 

Execution

Once per driving cycle

 

2007 Honda Element EX 

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element

  

Enable Conditions 

ENABLE CONDITIONS 

Malfunction Threshold 

1. When the secondary HO2S output drops to the response deterioration judgment threshold value and the 

response characteristics measurement is finished. 

MALFUNCTION THRESHOLD VALUE 

2. The voltage does not drop to the response deterioration judgment threshold value after a predetermined 

time (2.20 seconds) has elapsed.  

Driving Pattern 

Sequence

None

Duration

15.7 seconds or less

DTC Type

Two drive cycles, MIL ON

OBD Status

PASSED/FAILED/EXECUTING/OUT OF (TEST) CONDITION

Condition

Minimum

Maximum

Elapsed time that 
secondary HO2S 
activity is not 
monitored after starting 
the engine

15 seconds

-

Elapsed time after fuel 
cut-off

-

185 seconds

Engine coolant 
temperature

156 °F (69 °C)

-

Intake air temperature

-13 °F (-25 °C)

-

Engine speed

A/T

1,300 rpm

2,600 rpm

M/T

1,825 rpm

3,400 rpm

MAP value

27 kPa (7.9 in.Hg, 200 mmHg)

79 kPa (23.6 in.Hg, 600 mmHg)

Vehicle speed

30 mph (48 km/h)

-

Fuel trim

0.69

1.47

Fuel feedback

Closed loop

No active DTCs

P0010, P0011, P0101, P0102, P0103, P0107, P0108, P0111, P0112, P0113, 
P0117, P0118, P0133, P0134, P0135, P0137, P0138, P0141, P0171, P0172, 
P0300, P0301, P0302, P0303, P0304, P0335, P0339, P0340, P0341, P0344, 
P0443, P0496, P0497, P1009, P1128, P1129, P1157, P1172, P145C, P2195, 
P2238, P2252, P2270, P2271, P2646, P2647, P2648, P2649, P2A00

MIN 0.75 second
MAX 2.20 seconds

 

2007 Honda Element EX 

2007 ENGINE PERFORMANCE Advanced Diagnostics - Element

  

 

 

 

 

 

 

 

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