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Crankshaft Position Sensor Replacement
Typical Cost: Low
Mobile Repair? Yes
Typical Lead Time: 24 - 48 hours depending on part availability
What does a crankshaft position sensor do?
The crankshaft position sensor works in tandem with the camshaft position sensor to send a signal to the engine management control unit (ECU) so it knows when the number 1 cylinder is at top dead centre (TDC).
How does a crankshaft position sensor work and what are the components?
The crankshaft position sensor works on what is known as the Hall principal. There is a gear on the crankshaft which, when it rotates past the sensor, changes the voltage output being sent back to the ECU.
A crankshaft sensor is a single component, with a feed and return wire.
Typical symptoms that require a crankshaft position sensor to be replaced.
Faults with a crankshaft position sensor can cause some, or even all, of the following symptoms
- Difficulty in starting the engine or even a complete non start
- Illuminate engine management light (EML) and associated fault codes
- Engine going into “limp home” mode
What happens during a crankshaft position sensor replacement?
Changing crankshaft position sensors is a routine repair for all mechanics and can be done both kerbside as well as in the workshop, providing it is safe to do so.
Whilst there are variations between manufacturers, the basics are pretty similar.
The mechanic will;
- Assess the situation by reading the diagnostic codes and checking live data
- Once confirmed that the crankshaft position sensor is faulty, continue on to replacing it.
- Once replaced, start the engine and recheck the error codes
What does this repair cover?
Unless otherwise stated, the quote for your crankshaft position sensor to be replaced will cover;
- The cost of the crankshaft position sensor
- Coming to you
- Fitting of the parts
- Disposal of the old parts (unless you request to keep them)
- VAT (if applicable)
- 12 months parts and labour warranty
What to search for on the ClickMechanic site?
Crankshaft (CKP) position sensor replacement
Associated repairs
Camshaft position (CMP) sensor replacement
How much does it cost to have a crankshaft position sensor replaced?
The cost of a crankshaft position sensor replacement depends on your car and what parts your car's manufacturer recommends.
Find out what you could save by visiting ClickMechanic
https://www.clickmechanic.com/bookings/car
FAQ’s
Can I supply my own parts?
No, we will not fit customer supplied parts unless they are a brand new item, purchased from a dealership with the receipt as proof of purchase. There is no flexibility over this due to insurance and warranty issues.
What happens if the mechanic finds that the crankshaft position sensor doesn’t require changing and the problem is due to another issue?
In this scenario, the mechanic will provide a no obligation quote for the correct repair. Should you accept this, the mechanic can alter the booking accordingly. If you decide not to go ahead with the alternative repair, the mechanic can change the booking to a call out and diagnostic booking and charge according to the time spent with the vehicle and call out.