Honda Element. Manual - part 663

19. Update the ECM/PCM if it does not have the latest software (see UPDATING THE ECM/PCM ), or 

substitute a known-good ECM/PCM (see SUBSTITUTING THE ECM/PCM ).  

20. Let the engine cool until the coolant temperature is between 21°F (-6°C) and 104°F (40°C).  

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

fan comes on, then let it idle.  

22. Test-drive at a steady speed between 15-75 mph (24-120 km/h) for 10 minutes.  

23. Check for Temporary DTCs or DTCs with the HDS. 

Is DTC P0128 indicated?  

YES -Check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the ECM/PCM. 
If the ECM/PCM was updated, substitute a known-good ECM/PCM (see SUBSTITUTING THE 
ECM/PCM ), then go to step 20. If the ECM/PCM was substituted, go to step 1. 

NO -Go to step 24. 

24. Monitor the OBD STATUS for DTC P0128 in the DTCs MENU with the HDS. 

Does the screen indicate PASSED?  

YES -If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted, 
replace the original ECM/PCM (see ECM/PCM REPLACEMENT ). If any other Temporary DTCs or 
DTCs were indicated in step 23, go to the INDICATED DTCS TROUBLESHOOTING. 

NO -If the screen indicates FAILED, check for poor connections or loose terminals at ECT sensor 1, ECT 
sensor 2, and the ECM/PCM. If the ECM/PCM was updated, substitute a known-good ECM/PCM (see 
SUBSTITUTING THE ECM/PCM ), then go to step 20. If the ECM/PCM was substituted, go to step 1. 
If the screen indicates NOT COMPLETED, go to step 20. 

DTC P0133: A/F SENSOR (SENSOR 1) MALFUNCTION/SLOW RESPONSE 

1. Turn the ignition switch ON (II).  

2. Clear the DTC with the HDS.  

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

fan comes on, then let it idle.  

4. Test-drive under these conditions: 



Engine coolant temperature (ECT SENSOR 1) above 158°F (70°C) 

NOTE:



Before you troubleshoot, record all freeze data and any on-board 
snapshot, and review the general troubleshooting information (see 
GENERAL TROUBLESHOOTING INFORMATION ).  



If DTC P0139 is stored at the same time as DTC P0133, troubleshoot DTC 
P0139 first, then recheck for DTC P0133.  

 

2007 Honda Element EX 

2007-2008 ENGINE PERFORMANCE PGM-FI System - Element

  



A/T in D position (M/T in 3rd or 4th gear)  



Drive the vehicle at 25 mph (40 km/h) or less for 5 minutes, then drive at a steady speed between 
26-81 mph (41 - 130 km/h).  

5. Monitor the OBD STATUS for DTC P0133 in the DTCs MENU with the HDS. 

Does the screen indicate FAILED?  

YES -Go to step 6. 

NO -If the screen indicates PASSED, intermittent failure, the system is OK at this time. Check for poor 
connections or loose terminals at the A/F sensor (Sensor 1) and the ECM/PCM. If the screen indicates 
EXECUTING, keep driving until a result comes on. If the screen indicates OUT OF CONDITION, go to 
step 3 and recheck. 

6. Turn the ignition switch OFF.  

7. Replace the A/F sensor (Sensor 1) (see A/F SENSOR REPLACEMENT ).  

8. Turn the ignition switch ON (II).  

9. Reset the ECM/PCM with the HDS.  

10. Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE ).  

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

fan comes on, then let it idle.  

12. Test-drive under these conditions: 



Engine coolant temperature (ECT SENSOR 1) above 158°C (70°C)  



A/T in D position (M/T in 3rd or 4th gear)  



Drive the vehicle at 25 mph (40 km/h) or less for 5 minutes, then drive at a steady speed between 
26-81 mph (41 - 130 km/h).  

13. Check for Temporary DTCs or DTCs with the HDS. 

Is DTC P0133 indicated?  

YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the ECM/PCM, 
then go to step 1. 

NO -Go to step 14. 

14. Monitor the OBD STATUS for DTC P0133 in the DTCs MENU with the HDS. 

Does the screen indicate PASSED?  

YES -Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in step 13, go 
to the INDICATED DTCS TROUBLESHOOTING. 

NO -If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor 

 

2007 Honda Element EX 

2007-2008 ENGINE PERFORMANCE PGM-FI System - Element

  

(Sensor 1) and the ECM/PCM, then go to step 1. If the screen indicates EXECUTING, keep driving until 
a result comes on. If the screen indicates OUT OF CONDITION, go to step 11. 

DTC P0134: A/F SENSOR (SENSOR 1) HEATER SYSTEM MALFUNCTION 

1. Turn the ignition switch ON (II).  

2. Clear the DTC with the HDS.  

3. Start the engine, and let it idle without load (in Park or neutral) until the radiator fan comes on.  

4. Check for Temporary DTCs or DTCs with the HDS. 

Is DTC P0134 indicated?  

YES -Go to step 5. 

NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at 
the A/F sensor (Sensor 1), the A/F sensor relay (LAF), and the ECM/PCM. 

5. Turn the ignition switch OFF.  

6. Replace the A/F sensor (Sensor 1) (see A/F SENSOR REPLACEMENT ).  

7. Turn the ignition switch ON (II).  

8. Reset the ECM/PCM with the HDS.  

9. Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE ).  

10. Check for Temporary DTCs or DTCs with the HDS. 

Is DTC P0134 indicated?  

YES -Check for poor connections or loose terminals at the A/F sensor (Sensor 1), the A/F sensor relay 
(LAF), and the ECM/PCM, then go to step 1. 

NO -Go to step 11. 

11. Monitor the OBD STATUS for DTC P0134 in the DTCs MENU with the HDS. 

Does the screen indicate PASSED?  

YES -Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in step 10, go 
to the INDICATED DTCS TROUBLESHOOTING.

NOTE:



Before you troubleshoot, record all freeze data and any on-board 
snapshot, and review the general troubleshooting information (see 
GENERAL TROUBLESHOOTING INFORMATION ).  



If DTC P0135 is stored at the same time as DTC P0134, troubleshoot DTC 
P0135 first, then recheck for DTC P0134.  

 

2007 Honda Element EX 

2007-2008 ENGINE PERFORMANCE PGM-FI System - Element

  

NO -If the screen indicates FAILED, check for poor connections or loose terminals at the A/F sensor 
(Sensor 1), the A/F sensor relay (LAF), and the ECM/PCM, then go to step 1. If the screen indicates NOT 
COMPLETED, keep idling until a result comes on. 

DTC P0135: A/F SENSOR (SENSOR 1) HEATER CIRCUIT MALFUNCTION 

1. Turn the ignition switch ON (II).  

2. Clear the DTC with the HDS.  

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

fan comes on, then let it idle.  

4. Check for Temporary DTCs or DTCs with the HDS. 

Is DTC P0135 indicated?  

YES -Go to step 5. 

NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at 
the A/F sensor (Sensor 1), the A/F sensor relay (LAF), and the ECM/PCM. 

5. Turn the ignition switch OFF.  

6. Check these fuses: 



No. 14 OP1 (40 A) fuse in the under-hood fuse/relay box.  



No. 15 LAF HEATER (20 A) fuse in the under-dash fuse/relay box.  

Are any of the fuses blown?  

YES -Repair short in the wire between the A/F sensor relay (LAF) and the fuses. Also replace the blown 
fuses, then go to step 24. 

NO -Go to step 7. 

7. Disconnect the A/F sensor (Sensor 1) 4P connector.  

8. At the sensor side, measure resistance between A/F sensor (Sensor 1) 4P connector terminals No. 3 and 

No. 4. 

NOTE:

Before you troubleshoot, record all freeze data and any on-board snapshot, and 
review the general troubleshooting information (see GENERAL 
TROUBLESHOOTING INFORMATION ).

 

2007 Honda Element EX 

2007-2008 ENGINE PERFORMANCE PGM-FI System - Element