At the track and trouble codes
Thread Starter
Instructor
Joined: Aug 2001
Posts: 123
Likes: 0
From: richland Wa
At the track and trouble codes
Well, we were at the track today, last event for this year :sad: The good news is we won out bracket today, got another trophy 
. Our best run was a13:16 @ 105.95mph. I have a question, it seems that every time we go out to the track the engine light comes on after the 2nd pass. The codes that are tripped are PO137H and PO157H, anyone have this problem besides us and if so what causes it and how do you fix it?
Any help would be appreciated.
Thanks Burt
. Our best run was a13:16 @ 105.95mph. I have a question, it seems that every time we go out to the track the engine light comes on after the 2nd pass. The codes that are tripped are PO137H and PO157H, anyone have this problem besides us and if so what causes it and how do you fix it?Any help would be appreciated.
Thanks Burt
Le Mans Master
Joined: Jan 2001
Posts: 6,429
Likes: 1
From: God's Replica
Re: At the track and trouble codes (burt)
p0137 ho2s cicuit low voltage bank 1 sensor 2
p0157 " " " " " bank 2 sensor 2
Those are your rear o2 sensors.
conditions for setting DTC:
the ho2s signal voltage remains below 40mV. This condition is present for 40 seconds.
Diagnostic aids:
the pcm sets this DTC when the vehicle runs out of fuel.
HO2S wire: Sensor pigtail may be in contact with the exhaust manifold or exhaust system.
Inspect HO2S wires and connections for breaks or contamination
Check for intermittent ground in siganl wire between connector and sensor
lean injector(s): perform injector balance test
fuel contamination. water causes lean exhaust
fuel pressure: low pressure, system will be lean
exhaust leaks
vacuum or crankcase leaks can cause lean
if above are OK, the HO2S may be BAAAAADDDDD.... :eek: :cheers: :flag
p0157 " " " " " bank 2 sensor 2
Those are your rear o2 sensors.
conditions for setting DTC:
the ho2s signal voltage remains below 40mV. This condition is present for 40 seconds.
Diagnostic aids:
the pcm sets this DTC when the vehicle runs out of fuel.
HO2S wire: Sensor pigtail may be in contact with the exhaust manifold or exhaust system.
Inspect HO2S wires and connections for breaks or contamination
Check for intermittent ground in siganl wire between connector and sensor
lean injector(s): perform injector balance test
fuel contamination. water causes lean exhaust
fuel pressure: low pressure, system will be lean
exhaust leaks
vacuum or crankcase leaks can cause lean
if above are OK, the HO2S may be BAAAAADDDDD.... :eek: :cheers: :flag
