Description
Function of the Crankshaft Position Sensor
The crankshaft position sensor (CKP) monitors the rotational speed and position of the crankshaft. It sends this critical data to the engine control unit (ECU), which uses it to calculate ignition timing and fuel injection timing. Without an accurate crank signal, the engine cannot fire at the correct moment. A faulty crank sensor causes hard starting, engine stalling, misfires, intermittent no-start conditions, and a check engine light.
Common Diagnostic Trouble Codes (DTCs)
A generic OBD reader displays the standard 5-character code shown below.
- P0335 — Crankshaft Position Sensor “A” Circuit
- P0336 — Crankshaft Position Sensor “A” Circuit Range/Performance
- P0337 — Crankshaft Position Sensor “A” Circuit Low Input
- P0338 — Crankshaft Position Sensor “A” Circuit High Input
Why order it from Partszar
A faulty sensor, coil or starter feeds the engine the wrong signal, so it runs rich, misfires, will not start or drops into limp mode, and the fault light stays on until it is fixed. Once this is replaced the ECU gets what it expects and the vehicle runs the way it did when it was new.
- Fitment checked before it is listed. Every part is cross-referenced against the official parts catalogue and OEM part number so it fits first time. If your vehicle is listed above, this is the one you need. Not sure? Send us your VIN using the contact form below and we confirm the exact part for free, no obligation.
- Dispatched fast, tracked to your door. In-stock parts leave within 1 to 2 business days and reach you anywhere in South Africa in 2 to 5 business days with tracking. Back-order parts are sourced directly from our supplier, typically 3 to 4 weeks, and we keep you updated by email.
- Genuine Bosch part. The same unit the dealer fits, not a copy.
- Decide with confidence. Selected parts carry our 6-month limited guarantee when fitted by an RMI-approved mechanic. Not sure about anything? Contact us below before you order.
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