What is G28 sensor?

The Engine Speed Sensor (G28) is also used as a reference sensor for the crankshaft position and correlates with the Camshaft Position Sensor Bank 1 (G40) and Camshaft Position Sensor Bank 2 (G163).

What does a camshaft sensor do on an Audi?

A camshaft position sensor is an electronic device that does what it suggests — monitor the camshaft position and speed — and feeds that data to the vehicle’s engine control module (ECM). The ECM needs this data to control how much fuel enters the combustion chamber and ignition (spark) timing to ignite the fuel.

What does crank position sensor do?

The crankshaft position sensor monitors as a multifunctional sensor used to set ignition timing, detect engine RPM and relative engine speed. This sensor negates the need for manual distributor timing.

How do I know if I need a crankshaft sensor?

5 Signs of a Failing Crank Sensor

  1. Crank Sensor Problems Could Make it Hard to Start Car. One sign that your crankshaft sensor might be failing is if you find it hard to start your vehicle.
  2. Engine Vibration Issues.
  3. Fuel Economy Slippage.
  4. Uneven Acceleration.
  5. Check Engine Light On.
  6. Don’t Ignore Signs Signaling Possible Issues.

How do I know if my camshaft is bad?

6 Symptoms of a Bad Camshaft

  1. Active check engine light.
  2. Loud ticking or tapping sounds.
  3. Metal debris in the engine oil.
  4. Cylinder misfire.
  5. Increased emissions as a result of misfiring.
  6. Visible signs of damage.

What are the symptoms of a failing crank sensor?

Symptoms of a Bad Crankshaft Position Sensor

  • Illuminated Check Engine Light.
  • Engine Refuses to Start.
  • Hard Starting and/or Stalling.
  • Engine Runs Rough and Misfires.
  • Reduced Fuel Economy.

What causes camshaft sensor failure?

There are many reasons why the camshaft position sensor could fail. Some of these include wear-and-tear, water damage, and oil embedded in the engine. There are also sensors that fail due to corrosion, which is a common problem for camshaft position sensor circuits.

Where is a camshaft sensor located?

The Camshaft Position sensor is typically located in the cylinder head of the engine and has a cylindrical portion that inserts into the head. The Crankshaft Position sensor is normally located in the timing cover or on the side of the block with a cylindrical portion that inserts into the block.