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Sensors

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How to Replace an Exhaust Gas Recirculation (EGR) Pressure Feedback Sensor
Exhaust gas recirculation (EGR) systems use a pressure feedback sensor to tell the powertrain control module (PCM) how much exhaust gas is flowing.
How to Replace a Transmission Position Sensor (Switch)
Transmission position sensors (TPS) switch ensures a car is in Neutral or Park when started and shuts the car down if it's not in the right gear.
How to Replace an Evaporator Temperature Sensor (Switch)
The air conditioning system has an evaporator temperature sensor that fails when there is no cold air or the air conditioning is inconsistent.
What Does the Rain and Light Sensor Warning Light Mean?
The rain and light sensor warning light indicates when there is an issue with the sensor system. It will remain deactivated until fixed.
How to Replace an EVP Position Sensor
The EGR valve is monitored by a valve position sensor. This sensor helps your car's EGR system to run more efficiently and better control emissions.
How to Replace an Oil Pressure Sensor on Most Cars
Oil pressure sensors fail if the sensor light blinks or stays on constantly when the pressure if acceptable or when the gauge is at zero.
How to Replace a Fuel Rail Sensor
The fuel system has a fuel rail sensor which fails when the engine operates erratically, has difficulty starting, or the Check Engine Light comes on.
How to Replace a Speed Timing Sensor
Some signs of a failed speed timing sensor include a Check Engine Light and poor performance. It's also known as the crankshaft position sensor.
How to Replace an Injector Control Pressure Sensor
Diesel engines have an injector control pressure sensor that fails when there is hard starting, decreased power, or an illuminated Check Engine Light.
How to Replace a Manifold Temperature Sensor
Signs of a failing manifold temperature sensor include rough idling and a rough running engine, and may result in a failed emissions test.
How to Replace a Refrigerant Pressure Sensor
The air conditioning system has a refrigerant pressure sensor that goes bad when the air conditioning does not work or only works intermittently.
How to Replace the Speedometer Sensor on Most Cars
The speedometer has a sensor that fails if the speedometer or cruise control do not work, the Check Engine Light comes on, or the vehicle loses power.
How to Replace a Washer Fluid Level Switch
The washer fluid level switch fails when the Windshield Fluid Warning Light stays illuminated or there are unusual noises coming from the washer pump.
How to Replace a Steering Angle Sensor
A steering angle sensor fails if the Traction Control Light illuminates, the steering wheel feels loose, or the vehicle drives differently.
How to Replace a Car Battery Temperature Sensor
The battery has a battery temperature sensor that can fail if the Check Engine Light comes on, the battery voltage is low, or the RPM curve surges.
How to Replace an Exhaust Gas Recirculation (EGR) Temperature Sensor
Exhaust gas recirculation (EGR) temperature sensors monitor the EGR cooler's operation. One is on the exhaust manifold and one is near the EGR valve.
P0337 OBD-II Trouble Code: Crankshaft Position Sensor A Circuit Low Input
P0337 means that the crankshaft is suffering because of low voltage. This could be due to sensor not being aligned properly or electrical problems.
How to Replace a Camshaft Position Sensor
Camshaft position sensors determine the position of the camshaft in relation to the crankshaft to control the fuel injector.
How to Replace the Oil Temperature Sensor on Most Cars
Oil, as well as the oil temperature sensor, is crucial to the engine lubrication system. A bad sensor can lead to leaks and poor vehicle performance.
How to Replace a Yaw Rate Sensor
Yaw rate sensors monitor traction, stability, and the anti-lock braking system to alert you when the car tilts at an unsafe degree.

Related questions

Question
I was told my steering angle sensor has a short in it. When ever I first start driving it will randomly lose power to the gas pedal.
Hi there. Use a diagnostic tool and check the data from the steering angle sensor. See if the steering angle changes and the wheel velocity is displayed when the steering wheel is moved. If no change, then the steering angle...
Question
what sends signal to a TPS sensor
Hello, thank you for writing in. The throttle position sensor does not take inputs from anything, but instead it acts as an input to the ECU (the main computer). The ECU then uses it for engine performance. The sensor's resistance...
Question
Where is a yaw rate sensor located in a caprice 2008
The yaw rate sensor/lateral accelerometer on your vehicle is mounted beneath the center console and is held in place by two mounting nuts. To access the sensor, you have to follow the Factory Service Manual Procedure for removing the center console....
Question
Where is my crankshaft position sensor on my 2001 Mitsubishi Montero
Hello. The crankshaft position sensor on your engine is located right above the front of the crankshaft behind the timing cover. The cover will have the be removed in order to replace it. If you need some help with this,...
Question
I have a 1.6fe Toyota Conquest which is consuming too much fuel and engen vibrates and black smoke high idle 1995 Toyota Conquest
Hi there - first task is to get any problem code information available, whether the Check Engine light is illuminated or not. 1995 was an On-Board Diagnostics (OBD) year for many manufacturers, and your Conquest could have either OBD I...
Question
Temperature gauge moves up and down rapidly (does'nt jump).
The wire yl/lb from the PCM to the coolant temperature sensor seems to have a break in it. However, when jumping the wire from the PCM to the sensor could have been in contact with another circuit causing the gauge...
Question
Where is the vehicle speed sensor located on a 2004 Golf GLS 4 door hatchback 2.0?
The vehicle speed sensor is mounted on the transaxle housing, usually on the differential. It can be very difficult to see and you will probably have to have the car well in the air to get to it. If by...
Question
Car will overheat if I don't have the fan on. When fan is off it doesn't come on to release heat from engine. So the fan is always on.
Check the wiring to the coolant temperature sensor and see if there is power to the sensor switch. If there is no power, then check the cooling fan relay and see if its clicking on. If there is no clicking...
Question
Why does my truck only go forward? I changed the shift solenoid and other sensor on the transmission.
Check the sensors and make sure that the harnesses are plugged into the right sensors. If the wiring is correct, then the shifter to the transmission may not be hooked up properly causing the transmission to stay in a forward...
Question
I have a 2004 Buick Rendevouz that doesn't want to start. At first, it had a hesitation problem and it died at low rp
The camshaft position sensor will make the engine run but poorly. Check the crankshaft position sensor to see if its damaged or unplugged. A damaged crankshaft position sensor will cause a no spark condition. If you need further assistance with...
Question
When a car doesn't want to shift, what sensor is it for on a Cadillac SRX 2005?
Hi there. There are three different types of sensors and solenoids that will cause a transmission to not shift. 1. --- Transmission Position Sensor 2. --- Vehicle Speed Sensor 3. --- Shift Solenoids All three types of sensors and solenoids...
Question
How many crankshaft position sensor are there? 2002 Infiniti QX4
Hello - there is only 1 crankshaft position sensor on this engine. It is located on top of the transmission bellhousing at the rear of the engine (driver side). For assistance, I recommend a crankshaft position sensor replacement performed by...
Question
Replaced rear seal and now I Only have first gear and my speedamater don't work.
If you replaced the tail shaft seal behind the yoke and had to remove the driveshaft, then it is possible that the transmission vehicle speed sensor VSS is not installed correctly or the harness has been damaged. This will make...
Question
What if the VSA turns on during startup and doesn't turn off and what I do is I turn off the engine and start again. This time aro
Hi there. If the VSA light is coming on and shutting off but does not come back on until the next start, then this is a normal condition as the light is telling the drive that the VSA system is...
Question
P018c code has my engine light on in my 2013 Ram Longhorn pickup.
Hi there. The fuel pressure sensor could have failed, there could be a short or open circuit in the fuel pressure sensor, or there could be a poor electrical connection with the electrical connector. You would need to check the...
Question
Where is the fuel pressure sensor B located on a 2013 Dodge Ram longhorn 5.7 liter hemi located?
The sensor is located on the fuel rail on the driver side by the brake booster. If you need further assistance locating the fuel pressure sensor, then seek out a professional, such as one from Your Mechanic, to help you....
Question
Swapped transmission and installed new clutch kit now car wont start.
Hi there. Check the crankshaft position sensor and see if it is unplugged. If the crankshaft position sensor is not plugged in to the harness, then the sensor will keep the engine from starting. A camshaft position sensor will try...
Question
My car wont start after driving it for an hour, it will just crank and then start after 30 mins
The engine is very common to have an intermittent cam or crankshaft sensor. You can have the computer scanned for codes to one of the sensors and replace them as codes are stored. If you have codes for both then...
Question
My car stopped accelerating while driving and turned off.. lights and everything else would work but car wouldn't turn on 2002 Acura MDX
Hi there - there are 2 failures in particular that are likely candidates at your mileage level - a failed timing belt, and a fuel pump malfunction. If you don't hear the fuel pump run for a few seconds when...
Question
2002 Nissan Sentra GXE is smoking out the tail pipe. I replace a knock sensor and the code for the knock sensor still pops up.
HI there. There are different symptoms that create smoke that emits from the tail pipe. Here is a description of the different smoke for you to check: Smoke Types Blue: Blue smoke is an indication that the engine...

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