Question about 2003 Saturn VUE

1 Answer

I have a 2003 saturn Vue AWD V6 i'm getting error codes PO700,PO335,PO421,P2119,PO102,PO37,PO57,PO44,PO431 when it gets to operating temps it will shut off if left to sit for 30-40 mins it will start again. will even shut down when driving. if i can get past this point that takes a min or two after running for 10 mins will be fine till it sits again for a couple of hours.

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Saturn Master
  • 3,854 Answers

PO700 is a code telling you there are codes in the TCM of some late model cars where the Transmission control module has been removed from the PCM the vehicles main computer , And basically it happens when the TCM has a issue within itself or the transmission that sets a code and it sends a request for the PCM to illuminate the SES or CHECK engine light. To get at the TCM codes requires in most cases the most up to date scanner software purchased after the cars model year and as of yet is still a little iffy. Standard OBD11 scanners will generally not be able to see these codes.

P0335 (Crankshaft Position Sensor A Circuit Malfunction) first disconnect the CKP itself and inspect the connector and terminals for corrosion. It should be clean and dry. Make sure the weather-tite seal on the connector is in place, uncontaminated and undamaged.
Resistance of the CKP should be 500-900 ohms.
If all good, trace the CKP harness upwards as far as you can (until it enters the main harness) and make sure you don't have any "rub-through" or spots where the wiring appears damaged.

DTC P0421 Warm Up Catalyst Efficiency Below Threshold (Bank 1)
DTC P0431 Warm Up Catalyst Efficiency Below Threshold (Bank 2)
Its too coincidental for both catcons to fault so there's something in common to this error (I feel is) upstream. First there's a V6 engine with separate sets of cylinder banks serving separate catcons with separate pairs of O2 sensors. For both rear sensors to come up simultaneously indicating low efficiency and "runs fine but strong exhaust smell, maybe running rich(?)" suggests a component in common to both cylinder banks; maf, map, iat, ects, tpp, etc.. Any one of these parts plays a role in the overall effect of a running engine and most likely needs monitoring while the engine's running with either Saturn's Tech-tool II or better readers/scanners capable of displaying live data to discern subtle faults translating to either a constantly rich or leaned out condition, abnormal running. Without other error codes to go by, there may be no choice than to seek Saturn diagnostic services other than a local expert capable of interpreting all the information from live data displayed onto a graphics screen to read from all the sensors. Diagnostic specialists.

Possible causes of DTC P2119: Weak throttle body return springs
Throttle plate sticking due to carbon build-up.

P0102 code relates to the Mass Air Flow (MAF) Sensor. The mass airflow sensor measures the speed and density of the air entering the intake manifold. The engine computer converts this input to a Mass of air per unit time to correctly fuel the engine. the code P0102 will set if the MAF sensor signal voltage is less then 0.20volts.

Code P0507 will set if the actual idle speed is greater then 200RPM from what the engine computer has commanded. Possible causes for this code: P0507 is high idle when the PCM wants lower. If you have the 1.9 LT SOHC engine in the 2000-2002 year range this is normal caused by a leaking intake gasket. Can be other sources of vacuum leak or something else that keeps the RPM up when it should not. It may be the Idle Air Control valve sticking.

The other two codes P037 and P044 i an not sure and the code P057 was a guess of P0507 since it's seams to be in the area where the problem is . The P0404 i am guessing it's going to be EVAP problem like a lose or bad gas cap. P0370 is (ECM) replicates the signal received from the crankshaft position (CKP) sensor. This signal is sent to the fuel injection control module (FICM) through the engine speed signal circuit. The FICM uses this replicated signal to generate injection current and control the recharge of the fuel injection high voltage circuits. When cranking, the FICM has full control of the fuel injectors. The only input the FICM uses at this time is the engine speed signal from the ECM. The FICM monitors the signal along with the injection request signals from the ECM after the engine is running. If there is a problem with this signal, a DTC could set.

Start with the simple and clean the Idle Air Control (IAC) valve, and the Mass Air Flow (MAF) sensor. This may help the P0421, P0431. and then check the crank shaft sensor wire harness and replace the sensor, which should take care of the P0370. *** for the P0404, check the gas cap if not replace it. Good luck and keep me posted.

Posted on Nov 08, 2009


1 Suggested Answer


6ya staff

  • 2 Answers


Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Po701 n po700 are comming up on my car

code po700 refers to transmission control system/mil -malfunction==causes ==wiring---TCM
code po701 refers to transmission control system -range/performance problem===causes wiring --tcm
As both show the TCM as a common point of the fault I would replace it.

Nov 08, 2013 | 2003 Saturn VUE

1 Answer

Getting codes PO431, PO421, PO128

2003 saturn vue, we dont have the engine size, the codes should be and are the same, po 128 means; cooling temp is out of spec, make sure the coolant is full, then replace the coolant emp sensor and make sure the connection is good, i would also replace the thermostant, this is a common code on these and most of the time its the coolant temp sensor or thermostant, ive learned to replace then both to avoid future engine lights with code po128. next we will check the code # po421, this code is that the computer sees that the cat converters are taking to long to warm up, code po 431 is also the same as po421, this code is related to the thermostant and sensor, the sensor give the computer the wrong temp readings and then the compuetr thinks the engine is hotter than it is and thinks the converters should be also hot like the motor but the coolant temp is giving a false reading, if you replace the coolant temp sensor and the thermostant and fill coolant , then reset the light and you will solve the problem, i hope this is helpful, also the sensor is located to the right of the engine if you are standing in front of the motor, heres a picture of the sensor, remember to check connector heres a pic of the connector, good luck.johnjohn2_20.jpg

Nov 10, 2010 | 2003 Saturn VUE

1 Answer

I have a 2004 AWD Saturn Vue with 90k and surges between 40-50mph

i own a 2003 vue. it happened to me and finally the tranny went. it was a sealed transmission(cvt)do you have a dipstick to check your transmission fluid.if you dont, get saturn to look at it.a new one is 6000.00.Just hope you have a warranty.

Jan 10, 2010 | 2004 Saturn VUE

1 Answer

04 Saturn Vue Temp Gauge

check out i have found most all parts for my saturn vue 04 v6 3.5l fi. go to the parts catalog and select ur year, make, model, and engine.

Sep 10, 2009 | 2003 Saturn VUE

2 Answers

2003 saturn vue v6 awd cuts out; won't start

the BCM (body control module) is a problem on these cars it works one day and not the next,also controls the lights, security, door locks, etc this computer is usually very expensive and dealers charge around $800 the replace and reprogram it.

Aug 23, 2009 | 2003 Saturn VUE

1 Answer

2004 Saturn VUE V6 AWD (Honda Engine)

How do i check the transmission fluid in 04 awd v6 auto

Jul 20, 2009 | 2004 Saturn VUE

1 Answer

Whats the best grade of gas to put in saturn vue v6 AWD

Your car should run just fine on regular. If your owners manuel says super then that is what you should use. It is advisable to buy fuel from a high volume station because it will be fresh and less likley to get contaminated by sediment. Good Luck.

May 09, 2009 | 2003 Saturn VUE

1 Answer

Need a 03 3.0 v6 awd throttle body, linkage, sensor

Buy it new from many places Search Saturn Parts call local Dealer .
Happy Easter

Mar 30, 2009 | 2003 Saturn VUE

1 Answer

Front hub is stuck to knuckle. trying to replace hub assembly because of bad bearings. can not remove hub assy. how do you get drive shaft out of the way? 2003 saturn vue v6 awd.

spray with penetrating oil and let sit. hit with a big hammer. if it still will not come loose remove knuckle and use a press to remove bearing.

Mar 30, 2009 | 2005 Saturn VUE

Not finding what you are looking for?
2003 Saturn VUE Logo

2,512 people viewed this question

Ask a Question

Usually answered in minutes!

Top Saturn Experts


Level 3 Expert

85206 Answers

Jonah Oneal

Level 3 Expert

14092 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22484 Answers

Are you a Saturn Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides