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Modern cars have computerised engine management systems that rely on sensors to transmit data to the engine ECU. The crankshaft position sensor is used in conjunction with the camshaft position sensor to control ignition timing and it tells the engine ECU when to inject fuel and provide an ignition sequence. This sensor is located on the engine block on the crankshaft and due to the location of this sensor, it is subject to engine heat and oil leaks which causes this sensor to fail.
If the crankshaft position sensor fails Check Engine warning light will come on and you may notice that your vehicle is having trouble starting or running properly. When you notice any of these signs, find a mechanic and schedule a diagnostic inspection.
No. The crankshaft position sensor transmits essential information to your vehicle's computer management system. The sensor provides the management system with the information it needs to monitor ignition timing and tells the computer when to deliver sparks to the spark plugs and fuel to the fuel injectors. Without a working crankshaft position sensor, the computerized management system does not receive this critical information and the vehicle will not start or fail while driving.
Damage to the crankshaft position sensor is sometimes caused by an oil leak, which means that another component on your vehicle needs to be replaced or repaired. The electrical connector can also be damaged and should be inspected each time the position sensor is replaced.
The cost of replacing crankshaft sensor depends on the car you driving and the shop you book repair with. Select your car make and model at the top of the page to find out the exact cost of replacing crankshaft sensor on your vehicle, you can also book a local mobile mechanic once you findout the repair cost.