PCM code ?
Le Mans Master
Joined: Jun 2001
Posts: 7,331
Likes: 518
From: Admit Nothing, Deny Everything, Make Counter Accusations.
Re: PCM code ? (BLU-BY-U)
The PCM monitors the heated O2 sensor voltages in order to diagnose the AIR system. During the AIR test, the PCM activates the AIR pump during closed loop operation. When the AIR is activated, the PCM monitors the heated O2 voltages, and monitors the short-tem fuel trim values for both banks of the engine. If the AIR system is operating correctly, the heated O2 voltages should be low, and the short-term fuel trim should be high. If the PCM determines that the heated O2 voltages for both banks did not respond with the expected results during the tests, DTC P0410 sets.
If the AIR pump turns on during a closed loop operation and the heated O2 voltages do not fall below 222 mV for 1.3 seconds the DTC sets.
Or
If the AIR pump turns on during a closed loop operation and the short-term fuel trim does not change more than a predetermined amount the DTC sets.
Check the Air pump fuse and the ENG IGN 1 Fuse
Could be a problem with the air pump, the relay, or the circuit.
If the AIR pump turns on during a closed loop operation and the heated O2 voltages do not fall below 222 mV for 1.3 seconds the DTC sets.
Or
If the AIR pump turns on during a closed loop operation and the short-term fuel trim does not change more than a predetermined amount the DTC sets.
Check the Air pump fuse and the ENG IGN 1 Fuse
Could be a problem with the air pump, the relay, or the circuit.
Thread Starter
Le Mans Master
Joined: Mar 2002
Posts: 6,885
Likes: 2
From: Corpus Christi TX
Re: PCM code ? (BLU-BY-U)
thanks to everyone for the responses
RB, nice, detailed description. I appreciate that. :chevy
I've been tripping several codes since I had my cam installed. They all seem to be related to emission monitoring. For example:
P0133
P0137
P0153
P0157
P0410
P1416
If they're not really hindering performance, can I have these codes "supressed" with the use of LS1edit? Or is that even advisable?
[Modified by BLU-BY-U, 6:03 PM 2/15/2003]
RB, nice, detailed description. I appreciate that. :chevy
I've been tripping several codes since I had my cam installed. They all seem to be related to emission monitoring. For example:
P0133
P0137
P0153
P0157
P0410
P1416
If they're not really hindering performance, can I have these codes "supressed" with the use of LS1edit? Or is that even advisable?
[Modified by BLU-BY-U, 6:03 PM 2/15/2003]
Le Mans Master
Joined: Jun 2001
Posts: 7,331
Likes: 518
From: Admit Nothing, Deny Everything, Make Counter Accusations.
Re: PCM code ? (BLU-BY-U)
These are all codes based on the Heated O2 sensors. I would check the O2 sensor fuses and make sure you do not have a problem with the O2 sensor circuits.
You can disable the checks for these error codes in LS1Edit, but I do not think that is the way you want to go with this. You should bring the car back to MTI.
You can disable the checks for these error codes in LS1Edit, but I do not think that is the way you want to go with this. You should bring the car back to MTI.
