Parts for your 1997 Nissan Primera-Camshaft sensor

1997 Nissan Primera camshaft sensor: what it does and how to look after it

Yes, the 1997 Nissan Primera is fitted with a camshaft position signal — it’s generated by an optical sensor built into the distributor on the common P11 petrol engines (GA16DE 1.6 and SR20DE 2.0). Nissan labels this the “PHASE” signal in its documentation. Technical sources that detail this include the Nissan Primera P11 Factory Service Manual (EC section, Camshaft Position Sensor [PHASE], 1996–1999 revisions), the Haynes Nissan Primera 1990–1999 Service & Repair Manual (ignition/distributor chapters), and Autodata engine management/wiring references for P11 models. On these cars, the cam sensor isn’t a separate bolt-on at the cam cover — it’s integrated within the distributor and read by the ECU for cylinder identification and timing control.

On a 1997 Primera, that camshaft signal lets the ECU know which cylinder is on its firing stroke so it can run sequential fuel injection and correctly phase the spark, especially at start-up. Lose that signal and the car may crank longer, run roughly, or not start at all. The ECU may drop to a limp strategy if it can, but driveability usually goes downhill fast.

Typical signs the distributor’s internal cam sensor is playing up include long cranking, intermittent stalling when warm, flat spots under load, and fault codes such as P0340/P0341 (where applicable). Because the sensor is part of the distributor, repairs often mean replacing the whole distributor assembly or the internal sensor module if a quality part is available.

• Location: Inside the distributor on the end of the camshaft (rear/side of the head, depending on engine orientation).
• Basic checks: Inspect the distributor cap and rotor condition, look for oil ingress from a leaking distributor O-ring, and check the 3–4 pin connector for corrosion or broken wiring. Good engine earths matter too.
• Replacement tips:
  • Mark the distributor’s position relative to the head before removal to keep base timing close.
  • Disconnect the battery, fit the new unit, then set base ignition timing to spec using the proper service procedure and a timing light.
  • Use reputable OEM or OE-equivalent parts, cheap copies can cause repeat faults.
• Service advice: It’s not a routine replacement item, but it’s smart to inspect the distributor during tune-ups, fix any oil leaks promptly, and avoid blasting the area with water under the bonnet.

Popular questions about 1997 Nissan Primera camshaft sensors

Where is the camshaft sensor on a 1997 Primera?
On petrol P11 models, it’s inside the distributor. There isn’t a separate sensor on the cam cover, the optical sensor in the distributor provides both cam (phase) and crank angle information to the ECU.

What symptoms and fault codes point to a failing camshaft sensor?
Hard starting, stalling when hot, rough idle, hesitation, and poor fuel economy are common. Fault codes can include P0340 or P0341 (where the diagnostic system supports OBD-style codes). Visual checks for oil contamination and connector issues are worthwhile before replacing parts.

Can it be cleaned, or does it need replacement?
You can clean and re-seat the connector and fix any oil leak at the distributor O-ring. If the internal optical sensor or its circuit has failed, replacement of the sensor module or the entire distributor is the reliable fix.