Question about 2002 Volkswagen Jetta TDI

1 Answer

CEL is ON. OBD code P2181. I already replaced the ECT 3 mo ago due to OBD code P0118.

Posted by on

  • 1 more comment 
  • Anonymous Feb 01, 2009

    I have the same problem on my 2003 jetta 1.8T but the fans work when the A/C is running. Should I change the the Coolent Temp sensor first or the thermostat.

  • kellyjean Feb 08, 2009

    I have an 03 Jetta and I have already replaced the coolant sensor and now I have code P2181. What should be my next step?

  • Anonymous Mar 15, 2014

    what is the P2181 dec code for?

×

1 Answer

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

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that 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.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

No Not finding what I need for this code


Hi David
P0118 ECT means Engine Coolant Temperature Sensor.
you have to provide details about your vehicle make and model, engine size or engine code in term of helping you locate it.

Nov 20, 2015 | Cars & Trucks

1 Answer

How to fix p2181 code


you did not say what car so I will give the obd-2 code reference It refers to cooling system performance===causes---radiator---coolant thermostat---engine coolant blower motor ( fan)ECT sensor.. If you have a heating problem then these causes will be close enough to give you some idea of where to look for the problem

Jan 24, 2014 | 2005 Audi A4

1 Answer

I have code P0118.wont i may start in just a min,the engine hesitate and going to stop


http://www.obd-codes.com/p0118


What does that mean?

The engine coolant temperature (ECT) sensor is a thermistor screwed into a coolant passage in the cylinder head. Sensor resistance is high when coolant temperature is low and resistance drops when coolant temperature increases. The powertrain control module (PCM) provides a 5 volt reference and a ground to the sensor. The PCM monitors voltage drop to determine coolant temperature. If the ECT reads less than freezing temp. when engine has been running for more than a few minutes, the PCM determines a circuit fault and sets this code. Or if the PCM determines the sensor resistance is out of specs, this code is set.
Potential Symptoms

Symptoms of a P0118 could include:

  • Very poor fuel economy
  • A no start condition
  • Vehicle may start, but run very poorly, blowing black smoke, running very rough and misfiring
  • Illumination of MIL
Causes

A code P0118 may mean that one or more of the following has happened:

  • A bad connection at the sensor
  • An open in the ground circuit between the ECT sensor and the PCM
  • A short in the voltage feed between the sensor and the PCM
  • A bad PCM (less likely)
  • A bad temperature sensor (shorted internally)

Feb 01, 2013 | Cars & Trucks

1 Answer

Need obd trouble codes & meanings


here r your trouble code meanings:
1) p0123-throttle position sensor circuit, high input.
2)p0117-engine coolant temperature circuit, low input.
3)p0118-engine coolant temperature ciurcuit , high input.

Jun 18, 2012 | 1997 Plymouth Breeze

1 Answer

97 sierra fast rough idle, no power, severe knocking


Ok it seems to me like you may have to do some electrical checks, perhaps some voltage checks/drops in order to find out. For the P0118 you could use your scanner provided it can read live data. Look at the coolant temp snsr (cts or ect) and read its value it should read close to intake air temp snsr (IAT) value. The unplug the sensor value should change drastically and go negative. The jump the Two terminals and temperature should go high. If it does you've you've eliminated the circuit and the sensor it faulty. Make sure you have 5v reference as I said before you may have to voltage drop the circuit to make sure you're not loosing any voltage and that the circuit is intact. Good luck! Here are some links with more info and possible causes. http://www.obd-codes.com/p0118 http://www.obd-codes.com/p0507

Jun 16, 2012 | 1997 GMC Sierra

1 Answer

P2181 having problem with electrical cant figure this code out


that code is "cooling system performance". It may be due to a failed cooling fan, a stuck thermostat, or a bad ECT (engine coolant temperature) sensor or a bad wire from the sensor to the car's computer.

Jan 25, 2011 | 2006 Chrysler 300

1 Answer

I have a 2002 3-litre v6 a4 cab engine management


engine coolant temperature (ECT) sensor

A code P0118 may mean that one or more of the following has happened:
  • A bad connection at the sensor
  • An open in the ground circuit between the ECT sensor and the PCM
  • A short in the voltage feed between the sensor and the PCM
  • A bad PCM (less likely)
  • A bad temperature sensor (shorted internally)
info taken from http://www.obd-codes.com/p0118

Apr 21, 2010 | 2003 Audi A4 Cabriolet

3 Answers

2004 Toyota 4Runner, Regarding The VSC TRAC and VSC OFF lights


Check your switches for the VSC, some get bumped on (due to their location) and some get stuck in the "on"position.

Aug 04, 2009 | 2004 Toyota 4Runner

Not finding what you are looking for?
2002 Volkswagen Jetta TDI Logo

4,037 people viewed this question

Ask a Question

Usually answered in minutes!

Top Volkswagen Experts

Colin Stickland
Colin Stickland

Level 3 Expert

22041 Answers

yadayada
yadayada

Level 3 Expert

70346 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6869 Answers

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

Answer questions

Manuals & User Guides

Loading...