Weird codes - PCM failure?
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Laughing Gas
Joined: Mar 2006
Posts: 1,164
Likes: 2
From: Tri-Cities, TN
Weird codes - PCM failure?
2010 5.4 displaying the following codes:
P0113 air intake sensor
P0453 evap sys pressure sensor
P0533 Refrigerant pressure sensor - High
The MAF has been replaced with no change
The A/C pressure sensor has been replaced with no change
P0453 comes up as the fuel tank pressure sensor reading high, but there is no pressure in the tank
long story short - my wiring harness back by the fuel tank near the pump got chewed in half by my dog. Every wire all the way through. I repaired the damage, but these all appeared after a got it to start. No codes previously. Runs great but the cooling fan is always on, no A/C.
My first thought is that the PCM was damaged as there had to have been shorts where the wires were chewed through. Thoughts? Can I replace the PCM with a used one myself, or does it need to be coded to the truck?
Thanks for any input!
P0113 air intake sensor
P0453 evap sys pressure sensor
P0533 Refrigerant pressure sensor - High
The MAF has been replaced with no change
The A/C pressure sensor has been replaced with no change
P0453 comes up as the fuel tank pressure sensor reading high, but there is no pressure in the tank
long story short - my wiring harness back by the fuel tank near the pump got chewed in half by my dog. Every wire all the way through. I repaired the damage, but these all appeared after a got it to start. No codes previously. Runs great but the cooling fan is always on, no A/C.
My first thought is that the PCM was damaged as there had to have been shorts where the wires were chewed through. Thoughts? Can I replace the PCM with a used one myself, or does it need to be coded to the truck?
Thanks for any input!
Logistics Pro
Joined: Jul 2003
Posts: 3,595
Likes: 52
From: Lawton, Oklahoma
Double check the Yellow and Violet wire from those sensors to the PCM pin 58 on Connector 175B. That is the signal return wire for the Mass Air Flow Temperature Sensor, AC pressure transducer, and Fuel Tank Pressure Sensor
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yellowfever
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Jul 20, 2019 03:22 PM
