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My CEL is on permanently with P0118 on 2002 VW Passat Wagon GLS 2.8L V6. I see that is the Engine Coolant Temperatyre Sensor. Where is it located and is it an easy DIY fix? I'm unemployed and can't afford a costly repair.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: CEL is ON. OBD code P2181. I already replaced the ECT.

P2181 is a overheating engine.  
Can be:
Bad fan themoswitch, temp sensor themostat water pump impeller fan motor or fuse on battery
check to see if fans work by turning on Air Conditioner (fans should run with A/C on). Turn A/C off, warm engine, check to see if fans come on, if they do NOT it may be thermo switch on radiator on lower left side, has 3 wire plug, takes 1-1/8" wrench/socket to remove.  This thermo switch controls fans when temp reaches 195F, if fans do not come on at engine temp 190-195F try  replace switch VW part number: 1J0-959--481-A  You can verify if the switch is bad by shorting wire 1 and 2 (fans should come on when jumpered).

Posted on Oct 26, 2008

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fknstart
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SOURCE: My 01 VW Passat GLS Wagon-V6-Tiptronic won't start

check starter motor

Posted on Jan 06, 2009

bunnydawg
  • 5158 Answers

SOURCE: need relay location

relay 1 engine compartment
fascia 2 relay 18 (if it is diesel) relay 10 (diesel again) and this could likely be the best candidate relay 4 fuel pump relay/glow plug relay

Now for the fuse box locations ... looking from the front of the car... the engine compartment fuse box is on the left side up near the firewall.
fascia two is the lowest of the two fuse panels on the drivers side under the dash to the right of the steering column (left if it was a right hand drive).

This took about 15 minutes to locate all the possible fuses, be that as it may if i missed it don't hesitate to ask me again.

Robert

Please take a moment to rate this solution thanks

Posted on Feb 17, 2009

emissionwiz
  • 76848 Answers

SOURCE: 2002 vw passat wagon abs light on

this takes a dealer only scan tool to diagnose.

Posted on Mar 23, 2009

Selvol
  • 115 Answers

SOURCE: oil in water resovour vw 2002 passat

Could be just the OIL COOLER. VW IS CORRECT.
If the oil cooloer fails internely you will have a mix of coolant and oil. In the engine and in the Radiator,

But not to say the other guys were wrong...

Posted on Jun 18, 2009

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Location of a coolant temp sender on a 2003 vw 1.8t passat


Hi. See the suggested solutions. They are good.

Apr 11, 2014 | 2003 Volkswagen Passat

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Okay so I'm having problems with my 2001 vw passat v6 4motion wagon . when i start it up she sounds great but when i put it into drive and try to take off she sputters.. even when im driving down


could be time for a tune up also check the spark plug holes for oil if the valve cover gasket are leaking into there can also have a bad coil if the check engine light is on have it scanned at a auto parts store (most do it for free)the code can lead you to the bad cylinder exp code p0301 is cylinder number one p0306 is cylinder number six and the same for p0302-p035

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P1613 on my 1999 GLS passat.


P1613 = Malfunction indicator lamp [ MIL/CEL ] - open circuit / short to positive, fault is Wiring open circuit/short to positive which basically means the wiring to the engine warning light has a short making the CEL live all the time

Apr 11, 2011 | 1999 Volkswagen Passat

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2002 VW Passat GLS 1.8T throwing two codes: P0171 and P0411. No noticeable loss in performance. Can I fix this myself?


System Too Lean (Bank 1)

Basically this means that an oxygen sensor in bank 1 detected a lean condition (too much oxygen in the exhaust). On V6/V8/V10 engines, Bank 1 is the side of the engine that has cylinder #1.
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I would take it to a mechanic

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1 Answer

My volkswagon passat wagon 2000, my check engine light comes on, saying emmisions check, it also smells of oil when I have the heat blowing???


Assuming you have the V6 engine the oil is undoubtedly from leaking Cam Adjuster Gaskets on the back left & Right front of the heads (L&R). They are a pattern failure on these motors and must be changed when the timing belt is serviced. A Big Job! You will have to read the computer codes to know what the CEL is on for.

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Where is the coolant temp sensor on the 2003 VW Passat GL


The coolant temperature sensor on the V6 Passat is located on a pipe
that crosses between cylinder heads on the firewall side of the engine.
A. You will need to remove the plastic cover over the intake manifold.
B. Remove the air filter housing
c. disconnect the Mass Airflow Sensor
D. Loosen the clamp on the far end of the flex pipe going into the intake
Gently pry the flex pipe off the plastic housing and slide it off
the sendor is located around E.

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Nov 04, 2009 | 2003 Volkswagen Passat

3 Answers

Where is the temperature sending unit on a 1999 VW Passat located.


VW Passat & Audi A4 1990-2000

Motronic System
The Engine Coolant Temperature (ECT) sensor is mounted in the water outlet on the back side of the head. If you vehicle still has a original VW part it will be black in color with a four terminal connector. This device signals the engine management system with the current coolant temperature, the ECU takes this information and uses it to control other such circuits as the idle speed, knock control system, oxygen sensor circuit, exhaust gas recalculation, and fuel tank venting. It is also important to note that if at any time ECU does not receive a signal from the ECT it will substitute a value of 176°F (80°C).

VR6
The Engine Coolant Temperature sensor is mounted in the thermostat housing. The body of the sensor will be blue and the sensor will be blue and have two terminals if it is an original factory VW part.


The engine coolant temperature gauge uses a heat sensitive sending unit to transmit an electrical signal to the gauge. The sending unit is a heat sensitive variable resistor that is located on or near to the cylinder head and threads into an engine coolant passage. The sensors are a Negative Temperature Coefficient (NTC) type. As the temperature increases, the electrical resistance of the sensor decreases. As the coolant temperature changes, so does the resistance of the sensor. The gauge is calibrated within the operating range of the sensor and interprets the resistance value to display the coolant temperature.On models produced prior to 1994, the engine coolant gauge temperature sensor is a single wire terminal sensor.

Beginning with model year 1994, the engine coolant gauge and the Engine Control Module (ECM) temperature sensors were combined into one sensor with 4 terminals. The basic operation remains the same in that their resistance decreases as the coolant temperature increases, however the actual resistance values of the 2 sensor circuits are different. The electrical connector of the 4-wire terminal sensor (1 and 2) is keyed to prevent improper connection of the sensor's electrical circuit.

WARNING When trouble shooting electrical components, always consult a wiring diagram for the particular year, make and model to ensure proper test equipment connection and diagnosis. Failure to use suitable test equipment and testing methods could permanently damage the electrical component(s).

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Fig. Beginning with model year 1994, the Engine Coolant Temperature Sensors combined the sensors for the ECM and the gauge into one sensor-1997 2.8L V6 sensor shown


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Fig. The electrical connector for the combined temperature sensors is keyed to avoid improperly connecting the sensor's wiring-1997 2.8L V6 connector shown

I hope help you with this, good luck (remember rated this help).

Oct 13, 2009 | 1999 Volkswagen Passat

1 Answer

2003 passat 1.8T gls power dirver seat


Seeing you have a GLS edition... most of them have at least a power DRIVERS seat. I own a 2003 GLX v6 and it comes with both front seats powered and heated. i hope this helps!

Jan 28, 2009 | 2003 Volkswagen Passat

1 Answer

2002 VW Passat fuel type


If the engine requires Prem fuel I would use it, the problems of not using it are possible piston damage. decreased power and lower fuel economy, when regular is used the knock sensor pulls the timing back to reduce knocking, this i where the lower MPG comes in and power problems, if knock can not be eliminated then the pistons may be damaged. I have a Corvette that uses Prem fuel, if I run regular I loose 3 MPG, so the trade for lower cost fuel is cancelled out by the loss of MPG.

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