Parts for your 1999 Nissan Pulsar-Camshaft sensor

1999 Nissan Pulsar camshaft sensor: what it does and how to look after it

Based on the Nissan N15 Pulsar Factory Service Manual (EC section, 1995–2000) and service data for the GA16DE and SR20DE engines, the 1999 Nissan Pulsar does use a camshaft position signal. It’s generated by an optical sensor built into the distributor assembly, often referred to by Nissan as the Camshaft Position (PHASE) Sensor or Crank/Cam Angle Sensor. It’s not a separate bolt-on sensor on the head, it lives inside the distributor and is absolutely relevant to how the car runs.

On an N15 Pulsar, this sensor tells the ECU which stroke each cylinder is on so it can time fuel injection and ignition precisely. Without a clean cam signal, the car can crank longer, run roughly, or even refuse to start. It also prevents misfires at higher revs and helps keep fuel economy tidy. Fault codes commonly seen when it’s unhappy include P0340/P0341 for the camshaft position circuit or performance.

There’s no routine replacement interval for the cam sensor on these – it’s effectively “service on condition.” Still, smart owners and workshops give it a quick check during major services (say every 80–100,000 km) when they’re in around the distributor. Handy care tips include:

• Inspect the distributor cap and rotor for wear and carbon tracking, poor spark can mimic cam sensor issues.
• Check the distributor harness and connector for brittle wiring or green corrosion.
• Look for oil inside the distributor – a leaking internal seal can contaminate the optical disc and sensor.
• If misfires or long cranks appear with a Check Engine light, scan for codes before replacing parts.

Replacement on an N15 usually means swapping the distributor or the internal sensor/optical board. Before removal, mark the distributor’s position relative to the head so base timing goes back where it was. After fitting, many workshops set base timing with a timing light and the ECU in timing mode (per the FSM) to keep it all within spec. Choose quality new or remanufactured units – cheapies can cause intermittent faults that are a pain to chase.

If the car occasionally stumbles, the tacho drops out, or there’s a no-start when hot, it’s worth checking this sensor early. Sorting it promptly protects the catalytic converter and restores that easy Kiwi–Aussie commute feel.

Popular questions about 1999 Nissan Pulsar camshaft sensors

Does a 1999 Pulsar have a separate cam sensor?
No – on N15 models the camshaft position signal is generated inside the distributor. Nissan labels it the Camshaft Position (PHASE) or Cam/Crank Angle Sensor. So you won’t find a separate sensor on the cylinder head like later Pulsars.

What are the usual symptoms of a failing cam sensor on an N15?
Expect longer cranking, intermittent no-start, rough idle, sudden stalling, or loss of power, often with a Check Engine light and codes like P0340. A twitchy tacho during the fault is also common. These symptoms can overlap with ignition issues, so a scan and basic checks help confirm it.

Can it be cleaned or does it need replacing?
If the issue is light contamination, cleaning the optical disc area inside the distributor and fixing any wiring corrosion can help. If there’s oil intrusion or the internal board has failed, replacement of the distributor (or the internal sensor assembly) is the reliable fix.