p0153 a couple of days after p0174

[LANDY]

last week i driving and the check engine light came on. got the obd II out then it said p0153. i havent had time to search for the problem yet.

today i pluged in the obd II and found p0153 and p0174.
and my aeroforce reads bank 2 is running too rich on long trim.

can someone chime in.
and offcourse bank 2 is drivers side Right?
thanks

[LeoVampire]

Basically this means that an oxygen sensor in bank 2 detected a lean condition (too much oxygen in the exhaust).

Bank 2 is generally the side of the engine that doesn't have cylinder #1.

You will more than likely not notice any drivability problems, although there may be symptoms such as a lack of power, detonation (spark knock), and/or a hesitation/surge on acceleration.

The MAF (Mass Air Flow) Sensor is dirty or faulty.

There could be a vacume leak downstream of the MAF sensor.

[LANDY]

Basically this means that an oxygen sensor in bank 2 detected a lean condition (too much oxygen in the exhaust).

Bank 2 is generally the side of the engine that doesn't have cylinder #1.

You will more than likely not notice any drivability problems, although there may be symptoms such as a lack of power, detonation (spark knock), and/or a hesitation/surge on acceleration.

The MAF (Mass Air Flow) Sensor is dirty or faulty.

There could be a vacume leak downstream of the MAF sensor.
dirty mass air was my first tought.
hopefully not a vacum leak.

[FordNut]

P0153 is slow O2 sensor response bank 2. Do you have long tube headers? I believe there is a parameter in the tune for O2 sensor response time that can be adjusted for long tube headers since they move the O2 sensor farther from the exhaust port than the stock location. P0174 lean code usually means the MAF transfer function needs tweaked, but I guess it could be a dirty MAF sensor.

[LANDY]

yes Sir i have LT's.
i have had them on the car for over a month, never had a problem till last saturday.

[ImpalaSlayer]

how many times has this thing been "tuned"?

[LANDY]

once after the LT's.