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Po742 trouble code

Po 742 trouble code

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Code po 742 on chevy Malibu?


Torque converter clutch - stuck on.

Dec 07, 2014 | Chevrolet Malibu Cars & Trucks

1 Answer

Engine codes PO 128, PO 440, PO 456 and PO 622


Trouble Code: P0128

Thermostat Rationality Test

Possible Causes:


Check the operation of the thermostat (it may be stuck open).ECT Sensor is contaminated, damaged or it has failed.Inspect for low coolant level or for an incorrect coolant mixture.Trouble Code: P0440

EVAP Purge System Fault

Possible Causes:


EVAP purge valve vacuum supply is leaking or clogged.EVAP purge valve is stuck closed.EVAP purge solenoid has failed.NVLD assembly (leak detection) is damaged or has failed.NVLD switch circuit is open or the NVLD switch has failed.Ground circuit is open.PCM has failed.Trouble Code: P0456

EVAP Small Leak (0.020") Detected

Possible Causes:


.EVAP fuel tank or canister vapor hoses leaking or damaged.EVAP system component leaking, fuel cap loose or missing.Leak detection pump damaged or leaking.Trouble Code: P0622

Generator Field Control Circuit Malfunction

Possible Causes:


Generator field control circuit is open or is shorted to ground.Generator field control circuit is shorted to system power (B+).Generator field ground circuit is open.Generator is damaged or PCM has failed.PCM has failed.Here are the codes and causes.

Nov 25, 2012 | 2002 Dodge Intrepid

1 Answer

PO 136


it is bank 1 sensor 2 o2 sensor after the cat

Aug 14, 2012 | 1995 Buick LeSabre

1 Answer

2006 6.8 l V 10 ford Check engine lite on code po 182 and po 460


this obd2 trouble code table can help you understand the meaning of code.
and for your code, I think you can try to change the whole sending unit with the fuel pump in the tank. And see if the code come back.

Sep 14, 2011 | Ford E-350 Super Duty Cars & Trucks

2 Answers

I got an engine light code po 742 what does that mean?


The code means that the Torque Converter Clutch (TCC) in your transmission is staying engaged after the computer has commanded it off. This could be caused by a sticking TCC Solenoid, By internal hydraulic pressure leakage, by a faulty Turbine Speed Sensor Circuit, or a faulty Powertrain Control Module.

If your engine has been stalling when you come to a stop - especially after getting off of the highway, then you probably have a sticking TCC Solenoid.

This really needs to be diagnosed properly to keep from spending a bunch of money on parts unneccessariily.

Feb 25, 2011 | 1999 Saturn SL

1 Answer

PO 1665 code 1998 Buick Rivera, PO 440 code


EVAP is for Evaporative emissions control system, so no this is not EGR, that is Exhaust Gas Recirculation system, as far as the P1665 goes it is related to the other trouble code P0440, u will need to replace the EVAP system Purge flow control solenoid. This should correct both problems after u replace the part disconnect the battery for 5 min's to reset system.

May 14, 2009 | 1998 Chevrolet Monte Carlo

1 Answer

2001 pt cruiser codes po 605 and po 700


Diagnostic trouble code P0605 indicates internal Transmission Controller fault. Needs to be replaced

Jan 07, 2009 | 2007 Chrysler PT Cruiser Touring Hatchback

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