Hi all,

I just tested my vehicle with the Digimoto scanner while idle and driving. I noticed that SHRTFT12 and SHRTFT22 are always 0. Is this normal?

SHRTFT11 = O2 Sensor Bank 1 - Sensor 1 Short Term Fuel Trim
SHRTFT12 = O2 Sensor Bank 1 - Sensor 2 Short Term Fuel Trim
SHRTFT21 = O2 Sensor Bank 2 - Sensor 1 Short Term Fuel Trim
SHRTFT22 = O2 Sensor Bank 2 - Sensor 2 Short Term Fuel Trim

Here's the interesting part. Both SHRTFT11 and SHRTFT21 return values between +/-. Here's an example:

[Idle]
Entry #1:
SHRTFT11 = 3.125
SHRTFT12 = 0
SHRTFT21 = 1.5625
SHRTFT22 = 0

Entry #2:
SHRTFT11 = 4.6875
SHRTFT12 = 0
SHRTFT21 = 0.78125
SHRTFT22 = 0

Entry #3:
SHRTFT11 = 1.5625
SHRTFT12 = 0
SHRTFT21 = 0.78125
SHRTFT22 = 0

[Driving normal conditions]
Entry #1:
SHRTFT11 = 1.5625
SHRTFT12 = 0
SHRTFT21 = 2.34375
SHRTFT22 = 0

Entry #2:
SHRTFT11 = 0.78125
SHRTFT12 = 0
SHRTFT21 = 1.5625
SHRTFT22 = 0

Entry #3:
SHRTFT11 = 7.03125
SHRTFT12 = 0
SHRTFT21 = -5.46875
SHRTFT22 = 0


Does anyone know anything about these sensors such as location and/or what I should do?