Engine light codes

[OM VT3]

Hey guys could someone help me with these codes

2739 secondary air mini-HFM electr. Diagnostics

274b Lambda sensor pump current assimilation error VKAT bank 2

2743 lambda sensor heater resistant diagnostic VKAT bank 2

I think they might be O2 sensors but I don't know what else

[regular guy]

Originally Posted by leigh

Hey guys could someone help me with these codes

2739 secondary air mini-HFM electr. Diagnostics

274b Lambda sensor pump current assimilation error VKAT bank 2

2743 lambda sensor heater resistant diagnostic VKAT bank 2

I think they might be O2 sensors but I don't know what else

Check the error codes wiki posted here:
http://www.m3post.com/forums/showthread.php?t=928325

2739: I'll look that up later.

274B - P2629, Post-10

2743: I'll look that up later too.

[BPMSport]

Originally Posted by leigh

Hey guys could someone help me with these codes

2739 secondary air mini-HFM electr. Diagnostics

274b Lambda sensor pump current assimilation error VKAT bank 2

2743 lambda sensor heater resistant diagnostic VKAT bank 2

I think they might be O2 sensors but I don't know what else

Replace post cat bank 2 sensor.

[regular guy]

Originally Posted by leigh

Hey guys could someone help me with these codes

2739 secondary air mini-HFM electr. Diagnostics

274b Lambda sensor pump current assimilation error VKAT bank 2

2743 lambda sensor heater resistant diagnostic VKAT bank 2

I think they might be O2 sensors but I don't know what else

2739 - P2430, Post-60

274B - P2629, Post-10

2743 - P0155, Post-61

[OM VT3]

Originally Posted by Mike Benvo

Replace post cat bank 2 sensor.

Is that it?

[BPMSport]

Originally Posted by leigh

Is that it?

Sorry - meant to say precat..

Vkat = vor (before) cat

Nkat = nach (after) cat

[OM VT3]

Originally Posted by Mike Benvo

Sorry - meant to say precat..

Vkat = vor (before) cat

Nkat = nach (after) cat

Thanks

[Ralphy_Banks]

Hey guys I have a few questions so these codes keep popping up (2739 - 27C5) on I change the Air Suction Pump Hose already & my engine malfunction light still comes on, any idea what it can be

I look up the codes & it says


description for 2739 says "AIR MASS SENSOR SECONDARY AIR ELECTRICAL DIAGNOSIS"
Secondary Air Injection System Air Flow/Pressure Sensor Circuit High (Bank 1)


description for 27C5 says "AIR MASS SENSOR SECONDARY AIR SIGNAL"
Secondary Air Injection System Air Flow/Pressure Sensor Circuit (Bank 1)