Questions tagged [sensor]

An electronic device that monitors a particular parameter and provides data to be consumed by other systems to adjust and/or monitor vehicle systems. Examples include: mass air flow (MAF) sensors, oil pressure switches and transducers, ABS wheel speed sensors, outside air temperature (OAT) sensors.

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2007 VW Touareg V6 TDI BKS engine query on normal EGT values on idle and load

I have a 2007 VW Touareg 3.0 TDI, BKS engine whose Exhaust Gas Temperature values (Read under Measuring Value Blocks 102.1 and 102.2) are as follows: 102.1 fixed at a constant 551.0C 102.2 fixed at ...
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Jeep Patriot RPM Gauge bounces / not right

I have a Jeep Patriot 2012 2.4L 4 wheel drive limited. While all other dash gauges work well with no issues, the RPM gauge will stick (not move after a certain position, around 1000 RPMS and then ...
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Feels like ABS kicks in when braking

For the past week, my car (a Hyundai Tucson 2016 and 80 000 miles) started doing like ABS kicks in when braking, but rarely. It feels like when you're braking on ice (pedal starts vibrating) for 1 ...
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Ideal TPS Voltage Range for calibration

Some manufacturers state an ideal range for throttle position sensor which is helpful if you want to calibrate a new sensor or re-calibrate the old one. For instance, they say 0.5 V for idle and 4.5 V ...
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Installing after-market seats

So, I want to upgrade my standard seats (Leon Cupra MK3, same platform as Golf 7). Being a newbie, I thought I go online, I select a seat model I like, I fill in the car model and just put it in my ...
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What could be the cause if long cranking in my 2009 Honda Accord triggers the check engine/VSA light?

I’ve had a recurring problem with my 2009 Honda Accord. Longer than usual cranking triggers check engine/VSA light. Diagnostics pointed to problem with crankshaft sensor. Thus far, have replaced the ...
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Can the vehicle speed sensor (magnetic type) be activated outside the gearbox?

Could the speed sensor be activated when pulled out of its mount, if I pass a piece of metal near it will the speedometer register it? Does it work using some other data or does it only register ...
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How and what would I get from a car rain sensor?

I am looking for an answer on how to acquire data for the vehicle rain sensor and automatic wiper data from any vehicle. For example, I know that with Carberry (a Raspberry Pi) it provides a lot of ...
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DTC B1227 - An open in outside temperature sensor circuit - AC not working

I have Acura RDX 2007 and the AC does not work. I took it to dealership/mechanics and they saw that the outside air temp sensor somehow banged condenser and had to replace the condenser. The ...
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2 answers
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How to decide which check engine reading is faulty?

03 Honda CR-V. Check engine light just came on. O’reilys scanner gave a long list of readings... wondering if I should try bring it in or figure out a way to narrow it down beforehand.
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Do I need to replace the fuel pressure sensor of a 2007 Volvo XC90 V8 AWD?

I have a 2007 Volvo XC90 V8 AWD. The dealership told me that the check engine light came on intermittently and the reason was the fuel pressure sensor is faulty. It costs $525 to replace it. Is this ...
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Emergency brake light is on and stays on

The van (iveco daily, sorry don't know the type anymore) of my father has a brake warning light on. Once I removed te cover I saw it was a single wire that was disconnected from the switch. I thought ...
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Honda Civic 2018 blind spot information system warning

My Honda Civic 2018 had an accident and it was in a repair shop for a while. After the repair, there was a warning on the dashboard with below icon. When I asked about this from the mechanic, he took ...
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What does OBDII fault code P0120 really mean?

What does OBDII fault code P0120 mean? The device said: "TPS/Pedal Position Sensor A Circuit Malfunction". The problem is that TPS stands for: "Throttle-body Position Sensor, which sits ...
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2014 Chevy Malibu - Code P055B

I keep getting a P055B code, but I have changed out the sensor twice. The mechanic cleared the code but it keeps returning. Any suggestions?
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How does a OBD II misfire detection monitor know "exactly" which cylinder is misfiring?

I do know that magnetic pick-up coils are used to detect crankshaft position and these sensors are used to tell which cylinder is misfiring. These magnetic pick-coils do not produce a smooth & ...
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Fixing a malfunctioning seat belt sensor

I'm in the far end of a road trip, and towards the end of the road trip my seat belt warning started going off erratically. Tapping on the driver side seat belt buckle seemed to silence the warning ...
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Can something as simple as a bad o-ring cause complete sensor failure?

About half a week ago my car began stalling out, seemingly at random; at first I thought it might have been an issue of air bubbles in the coolant passing over the coolant temperature sensor - there ...
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Where can I find information about car PIDs?

i'm doing a research and i can't find voltage information from the car sensors, where do you find such information? finding the voltage range would help a lot.
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I cant figure out how to unplug the temperature sensor on my 2006 KIA RIO

What is the trick to unplug the temperature sensors on a 2006 KIA RIO
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2 votes
2 answers
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Affected sensors when boosting another car

I own a 2017 Kia SUV and periodically I'll give my neighbor a boost on their 2002 Liberty Jeep periodically, maybe once or twice a month, until they buy another battery. So I noticed a couple of times ...
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Power cable in 02 Chevy Suburban - where does it go?

I noticed on my 2002 Chevrolet Suburban that there’s a cable under the bonnet that’s unplugged and I’m trying to work out where it goes. I’ve included photos of it and where it runs. There’s no ...
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2000 Chevy 3500 Express strange MAP sensor OBD-II readings

A 2000 Chevy 3500 Express 5.7 Vortek has always run fine but has a major problem with torque when towing uphill. By chance I stumbled across the MAP OBD II readings and they are way off. It shows 9&...
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Divide by 2 for "wasted spark" motorcycle rev counter input

My motorcycle just got an upgraded ignition timing method. This new method fires the spark plugs twice each cycle which in turn increases the RPM * 2 according to the tachometer. Is there a way to ...
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3 answers
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List of sensors on cars

Over the years, I have gone from being frightened to performing repairs involving sensors to feeling like sensors are my best friends. They greatly reduce the guesswork necessary in repairing a car, ...
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What in the heyl is this thang?

I done bought me a mysterious 1998 5.4 v8 ford van. Econoline series. Done some snoopin under the hood and found this dang weird plastic box just hangin... danglin there zip tied to the dang high ...
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What is the cable connected to the base of the exhaust manifold

I'm currently taking apart an old vehicle which was just lying around. While dismantling the exhaust manifold, I noticed there was a cable that connects to its base, right before the point where it ...
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1 vote
1 answer
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2014 CX-5 hot air - possible overheating?

Hopefully someone can shed some light into what's going on. For the last couple of days we have been in a cold snap around -30C. I was driving the car and noticed that the ambient (outdoor) ...
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o2 sensor readings don't make sense to me

I get these readings as showed in the graph below from both o2 sensors and I am having a hard time to interpret them, especially sensor 2 (downstream). The readings are from a short drive around town (...
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Are the high and low fuel pressure sensors the same part?

I have a 2013 Ford Escape 1.6L se 2wd, my question is the high fuel pressure sensor and the low fuel pressure sensor the same part? My mechanic gave me a part # bm5z9f972a and the part # for the high ...
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Chevy Equinox Cabin (Interior) Temperature Sensor

Does anyone know the location of the Cabin (Interior, NOT ambient) Temperature sensor? This is for a 2012 Chevy Equinox 2.4L LT2. TIA Scott
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Tips for diagnosing a sensor error that persists after sensor is replaced

I have a 2009 Mitsubishi L200 2.5 that has a diagnostic code which reads "P0113 Intage Air Temperature Sensor 1 Circuit High Bank 1". I have replaced the sensor and cleared the error code but it comes ...
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Temp gage randomly stops working while driving and ac doesn’t work. 2015 Chevy cruze

I have a 2015 Chevy Cruze and randomly my temp gage stops working and my ac doesn’t run. I changed both the coolant sensors and if I disconnect the battery and reconnect it then everything runs ...
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1 vote
2 answers
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Which sensor is this?

My vehicle is a 2015 Volkswagen Passat Wolfsburg edition. I ran over a squirrel the other day on the driver side of my car and it has done some damage to my bumper shield and also a sensor. This is ...
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Toyota Funcargo (Yaris Verso) 1.3 VVTi (2NZ-FE) connector near oil filter

I was seeing my Yaris Verso VVTi 2NZ-FE engine and a cable was hanging (with light grey connector, 4 pin socket, and a single wire line) that is not connected anywhere. I tried to search for the ...
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Where is location of AC pressure sensor on 2007 Buick Lacrosse?

I will replace the AC pressure sensor/pressure switch on my 2007 Buick lacrosse. I don't have lots of experience but I am learning. I recently changed the oil, flushed the coolant, replaced the ...
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Do I have to disconnect the battery before I replace AC pressure sensor/pressure switch?

I did some research and with some people's help, I think my AC pressure sensor/pressure switch doesn't work properly. When I try to turn on AC I see the light come on but it doesn't give me cold air. ...
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Ambient Air Temperature

Put a plow on my 2014 1500 Silverado after driving for about 20 minutes temperature outside reads over a hundred can i reposition sensor or remove it.
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2005 Ford Escape (Hybrid) Hood Ajar alarm triggered when left blinker is on

I seem to be having an electrical issue with my 2005 Ford Escape Hybrid. Whenever using the left blinker, the Hood Ajar alarm goes off and continues beeping until the blinker is turned off. It does ...
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P0406 Error - Ford Figo

I bought a second hand Ford Figo 2011. The vehicle has driven around 56k kilometres. Recently there was an issue with the starter motor, which I got fixed. After that the Check light is on. The Ford ...
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1 answer
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How often should we change Coolant Temperature Sensor, and is it life time long?

I drive Nissan Sunny 2010 N16, it has 225000 KM, I am experiencing extra fuel consumption, for 45 Ltr it makes only 350 KM in average (high way/city) driving, one week back I changed the oxygen sensor ...
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How to fix a speed sensor signal problem?

TL;DR - My transmission computer says its output shaft speed sensor reads 0, what is wrong? I am trying to troubleshoot a problem I am having with the speed sensor on an older automatic transmission, ...
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What kind of MAF sensor is this?

A Bosch MAF sensor from a 1994-1996 Volvo looks like this: I have read about different types of these old sensors and they all mention a "wire", however I cannot see a wire in this sensor, just a ...
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1 vote
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02 Taurus no acceleration, miss shifting, and no power

I have a 2002 Taurus 3.0 OHV. I'm getting no acceleration, miss shifting, and no power. I installed a new EGR control valve, differential pressure sensor, air filter, and coolant temperature sensor, ...
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device/rig to establish ground truth data about car parameters [closed]

We are looking to conduct research into automotive technology and were wondering if there exists some device/rig that can help in measuring vehicle parameters to establish ground truth. We would like ...
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2 votes
1 answer
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Seat occupancy sensor malfunction VW Jetta 2008

I have a problem with the passenger seat occupancy sensor. It doesn't understand if someone is seating and the seat belt warning light doesn't turn on if the passenger is not wearing his seat belt. ...
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engine oil temperature sensor problems

I'm Getting a dtc for the eot sensor low voltage. According to the manual this happens when the voltage is less than 0.07v. The connector is plugged in properly. I have checked continuity between the ...
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06 Jeep Cherokee 8cyl; Auto transmission

It seems that I am annually having to replace the “map sensor” and various parts associated with that. Last week I replaced it again, and next will be the “auto throttle body” or something with the ...
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1 vote
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Hi I’ve got a 2013 insignia 2.0CDTI coolant problems

Coolant warning message keeps coming up on dash checked level ok replaced sensor but message keeps coming up help
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ABS/ stabilisation control error

I have polo 1.2Tsi 2015 model, here is the problem : my clutch eas dead and i bought new one and fitted it in, after i started the car it did not move at all, it showed ABS/ STABILISATION CONTROL ...
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