P2135- Reduced Power
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TECH Fanatic
Joined: Jul 2022
Posts: 1,032
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From: Alaska
P2135- Reduced Power 2003 Denali LQ4 throwing P2135, Reduced Power
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Wiggled, disconnected accelerator pedal connector, and throttle control module connector(s)
Did not see anything obvious.
What should I be looking for ?
Have HPTuners, scan shows LTFT -18% after driving across town with " reduced Power "
also, P 0155 bank2 Sensor 1 O2 heater circuit.
Have not pulled O2 connectors yet, probably going to just swap the front/rear sensors on that side, after it's done snowing...
.
Wiggled, disconnected accelerator pedal connector, and throttle control module connector(s)
Did not see anything obvious.
What should I be looking for ?
Have HPTuners, scan shows LTFT -18% after driving across town with " reduced Power "
also, P 0155 bank2 Sensor 1 O2 heater circuit.
Have not pulled O2 connectors yet, probably going to just swap the front/rear sensors on that side, after it's done snowing...
Sounds like the typical harness problem on those year trucks. I would bet there is a break in one of the wires going to the throttle body/TAC module or the pins in the connector have lost their tension and it's no longer making good contact.
