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Old Mar 23, 2016 | 05:15 AM
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Code Help!
Got a few codes and wondering what is up. 96 F-150

P1506
P0141
P0171
P0174
P0385

Thanks for the assistance.
 
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Old Mar 23, 2016 | 08:40 AM
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Assume those are for your 2002 F350 in your signature?
 
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Old Mar 23, 2016 | 08:48 AM
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Originally Posted by rla2005
Assume those are for your 2002 F350 in your signature?
96 F-150...
 
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Old Mar 23, 2016 | 11:19 AM
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Looks like the P1506 could cause the next three codes (P0141, P0171, P0174) but not sure about the P0385 being associated with it, any ideas?
 
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Old Mar 23, 2016 | 11:51 AM
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Diagnostic Trouble Code (DTC) P0385 indicates that Self-Test has detected a Misfire Detection (MD) Sensor circuit failure.

Possible causes:

-- MD circuit open.

-- MD circuit shorted to GND.

-- MD circuit shorted to PWR.

-- SIG RTN open.

-- Damaged MD Sensor.

-- Damaged PCM.
 
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Old Mar 23, 2016 | 11:56 AM
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Originally Posted by Whitey Ford
Looks like the P1506 could cause the next three codes (P0141, P0171, P0174)
P1506 is a symptom as well as P0171 & P0174. I suspect you have a vacuum leak.

Code P0141 indicates a problem with the O2 sensor heater circuit.
 
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Old Mar 23, 2016 | 02:33 PM
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Originally Posted by rla2005
Diagnostic Trouble Code (DTC) P0385 indicates that Self-Test has detected a Misfire Detection (MD) Sensor circuit failure.

Possible causes:

-- MD circuit open.

-- MD circuit shorted to GND.

-- MD circuit shorted to PWR.

-- SIG RTN open.

-- Damaged MD Sensor.

-- Damaged PCM.
I have read that a vacuum leak or intake gasket leak can also cause this issue and the lean bank codes. I will complete this thread when we figure it out. Smoke (brake cleaner) test next.
 
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Old Mar 23, 2016 | 02:36 PM
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Originally Posted by rla2005
P1506 is a symptom as well as P0171 & P0174. I suspect you have a vacuum leak.

Code P0141 indicates a problem with the O2 sensor heater circuit.
Thank you. Looks like they all could be related. With an intake leak can an O2 sensor code throw with the lean running condition?
 
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Old Mar 23, 2016 | 03:37 PM
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Originally Posted by Whitey Ford
Thank you. Looks like they all could be related. With an intake leak can an O2 sensor code throw with the lean running condition?

Yes

Any unmetered air will usually trigger a lean code.
 
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Old Mar 23, 2016 | 03:59 PM
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Originally Posted by rla2005
Yes

Any unmetered air will usually trigger a lean code.
Thank you!
 
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