Camshaft sensor XSARA PICASSO 2003

OEM: 9665443580-1

Disassembled car photo

Engine running

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What is this part and why does it matter?

The camshaft position sensor tracks the rotational position of the camshaft, letting the ECU determine which cylinder is on its power stroke for correctly sequenced fuel injection and ignition.

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Signs of a faulty part

If you notice any of the following, the part likely needs replacement:

  • Engine won’t start or is very hard to start
  • Rough idle or misfire
  • Check Engine light with a cam position fault code

Installation information

Bolts near the camshaft or cylinder head — check the correct air gap or seating during installation.

Frequently asked questions

While the crankshaft sensor tells the ECU engine speed and position, this sensor identifies specifically which cylinder is on its power stroke — together they allow correctly sequenced fuel and spark delivery for each individual cylinder.

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