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Oct 16, 2013 | 09:38 PM

Houston Ben

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Code help needed please

Hi all, I am at the tail end of my swap with a 2011 5.3 and 6L80 trans and have run into a problem. The engine will start and then die after approximately 10 to 15 seconds. I was able to borrow a code reader and when I hooked up the code reader I got 10 codes as listed:

P0036 Heater control circuit bank 1 sensor2
P0056 Heater control circuit bank 2 sensor 2
P0443 EVAP emission system purge control valve circuit
P0449 EVAP emission system vent valve solenoid circuit
P0452 EVAP emission system pressure sensor / switch low
P0463 Fuel level sensor A circuit high
After looking around the above codes should be no problem for my engine to run, or am I wrong?

P0480 Fan 2 control circuit
P0481 Fan 2 control circuit
Need to hook up my electric fans

P0690 ECM / PCM power relay sense circuit high
No idea what to do for this one, can anyone help??

U01090 Lost communication with fuel pump control module
Will this cause my engine not to run?

I erased all but 5 would not erase
P0443, P0449, P0452, P0463, U0109
I erased again and only 2 showed but forgot to write down which ones. I attempted to start engine and it ran for a few seconds but tripped codes again and died. Ran code scan and came back with 12 codes, all the same except for
P0054 H02S heater resistance bank 1 sensor 2
P0060 H02S Heater resistance bank 2 sensor 2
I deleted codes again and started, it wanted to run but codes tripped it again.

Does anyone know what these codes mean?? What can I do for these???? PLEASE HELP!!!

Oct 16, 2013 | 11:53 PM

LSX Power Tuning

FormerVendor

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From: Brenham TX

Have you had the ecm re-programmed for the swap?

Oct 17, 2013 | 05:02 AM

sicksspeed

On The Tree

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From: bayville n.j.

probably need that before mentioned tune but what year and all was the donor?

Oct 17, 2013 | 07:26 AM

Houston Ben

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Sorry about that, yes the computer was re-programed and he said he did the following:

"Alright well to answer your questions, I disabled vats, disabled starter fault checks, changed the rev limiter to 6800, disabled flex fuel, increased power enrichment ramp in, took out power enrichment delay, disabled cat over temp, disabled displacement on demand, decreased IAT and ECT spark advance correction, maxed out all torque vs. rpm tables, turned off brake torque limit, disabled tip in ETC limit, disabled all traction control settings, disabled catalyst test, switched fuel pump control module equipped" to "no", and turned off all the speed limiters."

The engine, computer, and trans are out of a 2011 1500.

Thanks!

Oct 17, 2013 | 08:09 AM

Ed Wright

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From: Tulsa, OK

6800 rev limiters for a stock 5.3L truck engine? Did he/she ride the short buss to school? Besides that (Damn!) there is a lot more to a calibration for an engine swap like that.

Oct 20, 2013 | 02:54 PM

Houston Ben

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Ok, I ran a new power wire straight from the battery to the PCM and cleared up the P0690 ECM / PCM power relay sense circuit high code. So now I only have the following codes

P0036 Heater control circuit bank 1 sensor2
P0056 Heater control circuit bank 2 sensor 2
P0443 EVAP emission system purge control valve circuit
P0449 EVAP emission system vent valve solenoid circuit
P0452 EVAP emission system pressure sensor / switch low
P0463 Fuel level sensor A circuit high
P0480 Fan 2 control circuit
P0481 Fan 2 control circuit
U01090 Lost communication with fuel pump control module

I can clear all but two of the emission ones and try to start it and it runs for a bit longer now and I can rev it some but then dies. So my next plan of attack is o go to a junk yard and get the exhaust cut off a truck where the o2's go and to also take the PCM back to the tuner and have him take the rest of the crap off there. One question, will the U0109 one make my truck quit running?

Thanks

ben