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05 PT Turbo error codes: 0031,0037, 0456, 2074

 
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Old 01 Nov 2010, 02:07 pm
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Default 05 PT Turbo error codes: 0031,0037, 0456, 2074

My 05 PT ( 2.4L Turbo, 82,358 miles ) is not running well. It will lose speed/power at high speeds. I took it to a shop and tech said I need to replace the 'turbo' on the vehicle - way too much money. Another tech siad it was the "fuel sensor" - so I'm a bit sonfused. Looking for possible alternatives. I ran the above codes, can anybody point me to where I can find what the codes mean for confirmation?

I believe codes 0031, 0037 are for the oxygen sensor ( is it for one or both, if one which one?) and 0456 for a vacuum leak (but where would the leak be located?), not sure about 2074, but don't know if 2074 is the primary reason for all the issues. Thanks

Last edited by acuevas; 01 Nov 2010 at 06:37 pm.
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Old 01 Nov 2010, 03:33 pm
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Default Re: 05 PT Turbo error codes: 0031,0037, 0456, 2074

Error Codes

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Old 01 Nov 2010, 06:06 pm
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Default Re: 05 PT Turbo error codes: 0031,0037, 0456, 2074

Thanks Hooligan,

Confirmed that 0031,0037 are for the oxygen sensors. I am assumming that both sensors are going bad. Or, is it just one,but which one? Also, did not find error codes 0456 & 2074 listed in the list.

Last edited by acuevas; 01 Nov 2010 at 06:39 pm.
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Old 03 Nov 2010, 05:50 am
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Default Re: 05 PT Turbo error codes: 0031,0037, 0456, 2074

P0456: The code indicates a small leak in the EVAP system.

Try taking off and then re-tightening the gas cap. Make sure it clicks shut about 3 times. The code should go away after a few cycles.

====================================

P2074: Manifold Pressure/throttle Position Correlation

CORRELATION - HIGH FLOW/VACUUM LEAK

When Monitored: Engine Running, during all drive modes.
Set Condition: If vacuum drops below 1.5 Hg with engine RPM greater than 2000 RPM
at closed throttle.

POSSIBLE CAUSES

VACUUM LEAK
HIGH RESISTANCE IN MAP (K7) 5 VOLT SUPPLY CIRCUIT
RESISTANCE TO GROUND IN MAP (K7) 5 VOLT SUPPLY CIRCUIT
MAP SENSOR
HIGH RESISTANCE IN (K1) MAP SIGNAL CIRCUIT
RESISTANCE TO GROUND IN (K1) MAP SIGNAL CIRCUIT
HIGH RESISTANCE IN (K4) MAP GROUND CIRCUIT
PCM
TP SENSOR OPERATION
HIGH RESISTANCE IN (K6) TP SENSOR 5 VOLT SUPPLY CIRCUIT
RESISTANCE TO GROUND IN (K6) TP SENSOR 5 VOLT SUPPLY CIRCUIT
TP SENSOR
HIGH RESISTANCE IN (K22) TP SIGNAL CIRCUIT
RESISTANCE TO GROUND IN (K22) TP SENSOR SIGNAL CIRCUIT
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Old 03 Nov 2010, 01:41 pm
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Default Re: 05 PT Turbo error codes: 0031,0037, 0456, 2074

================================================== =========================================
P2074: Manifold Pressure/throttle Position Correlation

CORRELATION - HIGH FLOW/VACUUM LEAK

When Monitored: Engine Running, during all drive modes.
Set Condition: If vacuum drops below 1.5 Hg with engine RPM greater than 2000 RPM
at closed throttle.

POSSIBLE CAUSES

VACUUM LEAK
HIGH RESISTANCE IN MAP (K7) 5 VOLT SUPPLY CIRCUIT
RESISTANCE TO GROUND IN MAP (K7) 5 VOLT SUPPLY CIRCUIT
MAP SENSOR
HIGH RESISTANCE IN (K1) MAP SIGNAL CIRCUIT
RESISTANCE TO GROUND IN (K1) MAP SIGNAL CIRCUIT
HIGH RESISTANCE IN (K4) MAP GROUND CIRCUIT
PCM
TP SENSOR OPERATION
HIGH RESISTANCE IN (K6) TP SENSOR 5 VOLT SUPPLY CIRCUIT
RESISTANCE TO GROUND IN (K6) TP SENSOR 5 VOLT SUPPLY CIRCUIT
TP SENSOR
HIGH RESISTANCE IN (K22) TP SIGNAL CIRCUIT
RESISTANCE TO GROUND IN (K22) TP SENSOR SIGNAL CIRCUIT[/QUOTE]

================================================== ======================================

Thanks Crewzin, if I replace the 'throttle positioning sensor' will that fix all of the above? Your explanation sounds quite technical and unfortunately I'm not, so i don't know how to interpret your info.

Last edited by acuevas; 03 Nov 2010 at 01:44 pm.
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Old 03 Nov 2010, 08:23 pm
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Default Re: 05 PT Turbo error codes: 0031,0037, 0456, 2074

You're making this much harder that it really is. Did you notice that the first thing mentioned for the 2074 was a vacuum leak? That (as well as the gas cap) will most likely take care of both codes. Actually the cap itself MAY take care of both codes. If you can't find any vacuum leaks, then the next step is to replace the MAP/MAF sensor. I've heard of one or two going bad over the years. Not many, just a couple. I'm afraid since we can't physically be there to help you check for any vacuum leaks that is up to you to handle.

Jerry
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Old 04 Nov 2010, 01:36 pm
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Default Re: 05 PT Turbo error codes: 0031,0037, 0456, 2074

Thanks wwpptc, I'll take it from here and see were it goes. By MAP/MAF sensor I am assuming you mean the 'throttle positioning sensor'?

Last edited by acuevas; 04 Nov 2010 at 01:39 pm.
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Old 04 Nov 2010, 01:47 pm
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Location: south of Tampa, Florida
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Default Re: 05 PT Turbo error codes: 0031,0037, 0456, 2074

No problem, glad to help. Also normally I would replace the upstream 02 sensor (attached to the top of the exhaust manifold) first. It reads the 02 that is contained in the "after combustion" gases when compared to the air entering the engine. The 02 in the cat is mainly there to give the PCM a read of the current condition of the cat itself. That's how the PCM knows that your cat eventually has gone bad and then gives you the appropriate code.

Jerry
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Old 04 Nov 2010, 01:57 pm
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Default Re: 05 PT Turbo error codes: 0031,0037, 0456, 2074

No, by MAF/MAP I mean the sensor that Is attached to the rear of the intake manifold near the overflow bottle that is attached to the firewall. It is sticking out of the intake a few inches after the throttle body to intake manifold attachment point. You'll see the wires sticking out of the sensor. You can't miss it. If Crewzin is reading this maybe he can post the pic from page 6-8 and pic 9-2 at the top of the page. Removal and replacement is described in step 9 on the same page.

Jerry
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Old 08 Nov 2010, 01:48 am
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Default Re: 05 PT Turbo error codes: 0031,0037, 0456, 2074

Quote:
Originally Posted by wwpptc View Post
No, by MAF/MAP I mean the sensor that Is attached to the rear of the intake manifold near the overflow bottle that is attached to the firewall. It is sticking out of the intake a few inches after the throttle body to intake manifold attachment point. You'll see the wires sticking out of the sensor. You can't miss it. If Crewzin is reading this maybe he can post the pic from page 6-8 and pic 9-2 at the top of the page. Removal and replacement is described in step 9 on the same page.

Jerry
Thanks again wwpptc. You know though, I think I am going thru a case of information overload. No fault of you guys, but rather my inexperience so I appreciate your patience.

I am clear on O2 sensors issue. It is the 2074 code issue ( losing power at high speeds )that I still have some loose strings. If I can't find or the issue is not a vacuum leak then I should try replacing the MAP/MAF sensor and not the 'throttle positioning sensor'? I have looked around in the forums and have come across threads which seem to indicate that it might also be the TPS. ( What does MAP/MAF mean by the way? )

Last edited by acuevas; 08 Nov 2010 at 02:26 am.
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