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Crankshaft Position Sensor 03C-906-433-E
Available in stores 25 offers
Vehicle fitment 47 vehicles
Technical specifications
| OEM Part Number | 03C906433E |
|---|---|
| Sensor Type | Hall Effect Sensor |
| Connector Type | 3-pin connector |
| Fitting Depth | 20 mm |
| Rated Voltage | 12 V |
| Cable Included | No — supplied without cable |
| Mounting Hardware | Includes mounting screw |
| Brand Group | Volkswagen Group (VW / Audi) |
| Primary Application | TDI diesel engines — Golf VI, Jetta V/VI, Audi A3 |
How to replace the Crankshaft Position Sensor
Replacing the 03C906433E crankshaft position sensor is a moderate DIY task requiring basic hand tools. Always consult your vehicle's factory service manual for model-specific torque values and access procedures before beginning. The steps below apply generally to compatible VW and Audi TDI applications.
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Disconnect the Battery
Before any work begins, disconnect the negative terminal of the vehicle battery to eliminate the risk of electrical shock or accidental ECU damage.
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Locate the Sensor
The crankshaft position sensor is located near the crankshaft pulley or flywheel housing on the engine block. Consult your service manual for the exact location on your specific model.
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Remove Obstructing Components
If engine covers, air intake ducting, or other components block access to the sensor, remove them carefully and set aside. Note the order of removal for reassembly.
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Disconnect the 3-Pin Electrical Connector
Press the locking tab on the connector and carefully unplug it from the sensor. Avoid pulling on the wiring harness itself.
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Remove the Mounting Bolt and Extract the Sensor
Using the appropriate socket or wrench, remove the single mounting bolt securing the sensor. Gently pull the sensor straight out of its bore — do not twist or pry aggressively.
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Install the New Sensor
Insert the new 03C906433E sensor straight into the housing bore. Ensure it seats fully and squarely before threading the mounting bolt.
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Secure and Reconnect
Tighten the mounting bolt to the torque specification listed in your vehicle service manual. Reconnect the 3-pin electrical connector until it clicks securely into place.
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Reassemble and Test
Reinstall any components removed for access. Reconnect the battery, then start the engine. Verify normal operation and confirm the check engine light is no longer illuminated. Clear any stored fault codes with a diagnostic scan tool.
Signs of a worn part
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Engine Cranks But Will Not Start
Without a valid crankshaft position signal, the ECU cannot time fuel injection or ignition. The engine will crank normally but fail to fire.
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Check Engine Light Illuminated
A failed or erratic crankshaft position sensor typically triggers a stored fault code (e.g. P0335 or P0336) and illuminates the MIL on the instrument cluster.
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Intermittent Stalling
A sensor with an intermittent fault may cause the engine to stall unexpectedly while driving, particularly during warm-up or under varying engine loads.
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Poor Engine Performance
Inaccurate crankshaft position data leads to mistimed fuel injection and ignition, resulting in hesitation, reduced power output, and poor throttle response.
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Engine Misfiring
Timing errors caused by a faulty sensor signal can cause one or more cylinders to misfire, producing rough idle, vibration, and increased exhaust emissions.
Replacement intervals
There is no manufacturer-defined preventive replacement schedule for this sensor. Replacement is condition-based — driven by fault codes, failed start events, or confirmed drivability symptoms.
Frequently asked questions
Will part number 03C906433E fit my VW Jetta TDI?
Yes — the 03C906433E is confirmed for use on Jetta V and Jetta VI TDI models (including CBEA and CJAA engine codes) as well as Jetta VI Sportwagen TDI variants. Always verify your exact engine code before ordering.
Is an aftermarket sensor like Febi 37317 as good as the Genuine VW part?
Febi Bilstein is a well-regarded OE-quality German supplier that manufactures components to the same specifications as the original part. For most owners, the Febi 37317 is a reliable and cost-effective alternative to the Genuine VW unit.
Does the 03C906433E come with everything needed for installation?
The sensor is supplied with a mounting screw but without a cable. If your existing wiring harness is in good condition, no additional parts are required. Inspect the connector and harness before installation.
Can I drive my car with a faulty crankshaft position sensor?
It is not recommended. A failing sensor can cause the engine to stall unexpectedly while driving, which is a safety hazard. In many cases a fully failed sensor will prevent the vehicle from starting at all.
Do I need to reprogram or calibrate the sensor after installation?
The 03C906433E is a direct plug-in replacement and requires no programming. However, you should clear any stored diagnostic trouble codes with an OBD-II scanner after installation to confirm the repair resolved the fault.
What fault codes are associated with a failed 03C906433E sensor?
Common related fault codes include P0335 (Crankshaft Position Sensor A Circuit Malfunction) and P0336 (Crankshaft Position Sensor A Circuit Range/Performance). Retrieve codes with a compatible scan tool to confirm diagnosis before replacing the sensor.
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