Parts for your 2010 Mazda Premacy-Crank angle sensor

2010 Mazda Premacy crank-angle sensor (CKP): purpose, servicing and practical advice

Yes, the 2010 Mazda Premacy (CR series) is fitted with a crank-angle sensor, commonly called the crankshaft position (CKP) sensor. This is documented in Mazda’s CR Premacy/Mazda5 Workshop Manual under Engine Control System – CKP Sensor, the Mazda Electronic Parts Catalogue for the CR platform, and Mazda’s OBD-II diagnostic coverage that lists DTCs P0335/P0336 for CKP signal faults. Those factory sources confirm the sensor is part of the engine management system across the petrol and diesel variants.

On this model, the CKP sensor lets the ECU know exactly where the crank is in its rotation and how fast it’s spinning. That timing data is crucial for spark and fuel delivery, smooth starting, stable idle, and keeping emissions in check. If the signal drops out or goes erratic, the ECU can’t time things properly, which is why a sick CKP often shows up as hard starting, random stalling, or a no-start with a check engine light.

For servicing the 2010 Premacy, the CKP isn’t a scheduled replacement item, but it deserves a once-over whenever the front of the engine is accessible (such as during belt work) or if drivability gets a bit off. A tech will usually inspect the wiring, connector pins and harness routing, make sure the mounting is snug, and confirm the sensor’s air gap to the trigger wheel is within Mazda spec. Cleaning light debris from the tip is fine, but harsh solvents or prying at the magnetic tip is a no-go.

Replacement is straightforward for most engines in this range. Typically it’s a single retaining bolt, a sealed sensor body, and a keyed routing for the loom. The big watch-outs are using the correct genuine-quality part, torquing the fastener to spec, and verifying the trigger wheel isn’t damaged. After refit, a clear of codes and a warm restart test will confirm the ECU is happy. If the vehicle had intermittent cut-outs, a live-data check of engine speed and a wiggle test on the harness help prove the fix.

• Common warning signs: long crank/no start, sudden stall, rough idle, reduced power, and DTCs P0335/P0336.
• Good practice: inspect connectors for oil ingress, secure the loom away from pulleys, and avoid aftermarket sensors of unknown quality.
• When to replace: when fault codes and testing confirm a weak or missing CKP signal, or when physical damage/corrosion is found.

Popular questions about the 2010 Mazda Premacy crank-angle sensor

Where is the CKP sensor located on a 2010 Premacy?
It’s mounted on the engine block near the crankshaft trigger wheel. On most petrol variants it sits low at the front of the engine by the crank pulley/oil pump area, reading a toothed wheel. Diesel placements can vary slightly, but the principle is the same: it faces the crank’s reluctor so the ECU sees every tooth as the engine turns.

Access is usually from underneath with the vehicle safely supported. Splash shields may need to come off for a clear shot at the retaining bolt and connector.

What are the symptoms of a failing CKP sensor on this model?
Owners often notice longer cranking, rough idle, random stalling at lights, or a complete no-start when the sensor finally gives up. The check engine light will typically log P0335 or P0336. Because the ECU loses accurate timing data, it can’t meter spark and fuel properly, so drivability suffers straight away.

Intermittent faults can be heat related: the car starts cold, then dies hot. A scan tool watching engine RPM while cranking is a quick way to spot a missing CKP signal.

Does the CKP sensor need routine replacement, and what does it cost?
It’s not a service-item by schedule, it’s replaced on condition. If testing confirms a bad signal or damaged wiring, fit a quality replacement. Most workshops allow about 0.7–1.0 hours of labour, depending on engine and access.

As a rough guide in AU/NZ, the sensor itself is often in the AUD/NZD $80–$250 range, with labour typically $150–$300. Using an OE or reputable brand is worth it to avoid repeat faults.