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RPM / Crankshaft Sensor - Valeo - 254112

RPM / Crankshaft Sensor - Valeo - 254112

This Valeo Crankshaft Position Sensor is designed to provide accurate engine speed and position da...

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eBayVALEO-OE 254112-OE Sensor, crankshaft pulse for HOLDEN,OPEL,VAUXHALL
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Product Information

Full details

The Valeo 254112 Crankshaft Position Sensor is designed for automotive technicians and DIY enthusiasts looking to restore precise ignition and fuel injection timing in their vehicles. By providing reliable engine speed and position data to the engine control unit, this sensor ensures optimal combustion and smooth engine performance, though users must be diligent in verifying vehicle compatibility as automotive sensors are highly specific to make, model, and engine type.

All features

Model Part Number254112
BrandValeo

Extended Product Information

FAQs

What does this sensor actually do?

It detects the speed and position of the crankshaft so the engine computer knows exactly when to trigger spark plugs and fuel injectors.

Is the installation difficult?

Installation is straightforward for those with basic mechanical knowledge, but access depends heavily on the specific vehicle engine layout.

How do I know if this fits my car?

Compare your current sensor's connector shape and part number, and verify the compatibility using your vehicle's make, model, and engine code.

Does this part come with a warranty?

Yes, it includes a 12-month manufacturer warranty covering defects in material and workmanship.

Do I need to program the car after installing it?

Typically, you only need to clear the engine fault codes; however, some vehicles may require a 'crankshaft position variation relearn' procedure.

Troubleshooting

Engine cranks but will not start

Check the 3-pin connector for a secure snap-fit and ensure the sensor is mounted flush to the engine block.

Intermittent engine stalling

Inspect the integrated cable for signs of heat damage or fraying that might cause signal interruption.

Check Engine Light remains on after installation

Use an OBD-II scanner to clear existing codes; the ECU may need a drive cycle to calibrate with the new sensor.

Pros and Cons

Pros

  • Meets OE quality standards for guaranteed performance
  • Integrated cable design makes installation straightforward
  • Essential for smooth idling and efficient fuel economy
  • Backed by a 12-month manufacturer warranty

Cons

  • Requires precise model matching to ensure proper fitment
  • Installation often requires access to cramped engine spaces
  • Requires clearing engine fault codes after replacement

Setup, Compatibility & Care

To install this sensor, first locate the crankshaft position sensor—typically mounted near the transmission bell housing or the front harmonic balancer. Disconnect the negative battery terminal for safety before unplugging the 3-pin oval connector. Remove the mounting bolts and extract the old unit, noting the orientation of the tip. Clean the sensor port of any debris or oil buildup before inserting the new Valeo 254112. Ensure the O-ring is seated correctly to prevent oil leaks, and tighten mounting hardware to manufacturer torque specifications. Always verify your specific VIN or vehicle compatibility against the Valeo 254112 part number prior to installation. Once installed, clear any diagnostic trouble codes (DTCs) using an OBD-II scanner to allow the ECU to relearn the new sensor signal.

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