2013 F350 SMOG problem
Thread Starter
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Trailering
Joined: Jan 2024
Posts: 16
Likes: 11
From: Linden, Ca.
2013 F350 SMOG problem
Hello All,
Ok, we have a 2013 F350 with the 6.7l PSD. It won't pass smog because one of the exhaust temperature sensors isn't working. I fired up AE and checked the four sensors. Sensors 1 through 3 are all giving me voltage and temperature readings. Sensor 4 is giving me voltage readings but not temperature. I tested all four sensors and they all came back with 209 to 213 ohms resistance. The voltage readings when running on all four temp sensors are between 1.02 and 1.15 volts.
I swapped sensor three and four and tried again. Still no temperature readings on sensor location number 4. Having swapped the sensors, I know it's not the sensor because the problem did not follow the sensor. I don't see any harness damage. I see a sensor controller on the passenger frame rail, # DC3A-5K202-AC. Do the temperature sensors run through the sensor controller? So any ideas guys? Thanks, Bruce
Ok, we have a 2013 F350 with the 6.7l PSD. It won't pass smog because one of the exhaust temperature sensors isn't working. I fired up AE and checked the four sensors. Sensors 1 through 3 are all giving me voltage and temperature readings. Sensor 4 is giving me voltage readings but not temperature. I tested all four sensors and they all came back with 209 to 213 ohms resistance. The voltage readings when running on all four temp sensors are between 1.02 and 1.15 volts.
I swapped sensor three and four and tried again. Still no temperature readings on sensor location number 4. Having swapped the sensors, I know it's not the sensor because the problem did not follow the sensor. I don't see any harness damage. I see a sensor controller on the passenger frame rail, # DC3A-5K202-AC. Do the temperature sensors run through the sensor controller? So any ideas guys? Thanks, Bruce
Hotshot
Joined: Jan 2004
Posts: 19,762
Likes: 1,079
From: St Louis
Are you getting a fault code? If so, what is it?
No, all four EGT sensors go to their respective connector pins into the PCM. You're probably looking at a NOX sensor module.
Do the temperature sensors run through the sensor controller?
Thread Starter
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Trailering
Joined: Jan 2024
Posts: 16
Likes: 11
From: Linden, Ca.
Because it keeps failing smog tests due to one of the sensors not sending data. I used my laptop with Auto Engenuity and I get temp readings from the first three sensors but not the last sensor. So, Bank 1 Sensor 4 is not reading temps. I took that sensor and swapped it into a different spot. The problem did NOT follow the sensor. The problem stayed with Bank 1 Sensor 4. So I either have a harness, electrical pin, or PCM issue as far as I can tell. This truck is on it's third engine. Both engine changes were done by a Ford dealer. Not that that makes their work full proof because it doesn't.
So, I am asking help from the forum as to what else to look for. Thank you guys very much. Bruce
So, I am asking help from the forum as to what else to look for. Thank you guys very much. Bruce
Hotshot
Joined: Jan 2004
Posts: 19,762
Likes: 1,079
From: St Louis
Bank 1 Sensor 4 is not reading temps. I took that sensor and swapped it into a different spot. The problem did NOT follow the sensor. The problem stayed with Bank 1 Sensor 4. So I either have a harness, electrical pin, or PCM issue as far as I can tell.
Because it keeps failing smog tests due to one of the sensors not sending data.
Thread Starter
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Trailering
Joined: Jan 2024
Posts: 16
Likes: 11
From: Linden, Ca.
I do have forescan, but my OBD2 interface does not support it. So I guess I need to get the correct interface.
I don't have the sheet in front of me right now to give that info. I will get it today and update this thread with that data. Thank you, Bruce
I don't have the sheet in front of me right now to give that info. I will get it today and update this thread with that data. Thank you, Bruce
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Thread Starter
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Trailering
Joined: Jan 2024
Posts: 16
Likes: 11
From: Linden, Ca.
Late up date. Turned out to be a PCM issue. Got it replaced and re-flashed by Ford dealer. Issues gone now and passed SMOG. Thanks guys. Bruce
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