Faulty crankshaft position sensor (internal failure or damaged connector); Damaged or corroded wiring in the sensor circuit (open, short, or high resistance); Metal debris or damage on the sensor tip or reluctor ring; Poor electrical connection at the sensor or ECM; Failed ECM (rare, but possible if all other checks pass); Aftermarket sensor with incorrect signal output

DTC codes / Nissan codes / P1335

P1335 · NissanCrankshaft Position Sensor REF

Q: What does code P1335 mean?

Crankshaft Position Sensor REF. P1335 on Nissan vehicles indicates that the engine control module (ECM) has detected a fault in the crankshaft position sensor REF (reference) signal circuit, which is used to determine engine speed and piston position. The ECM compares this signal with the camshaft position sensor signal and sets the code when the expected pulses are missing, erratic, or out of sync.

P1335 on Nissan vehicles indicates that the engine control module (ECM) has detected a fault in the crankshaft position sensor REF (reference) signal circuit, which is used to determine engine speed and piston position. The ECM compares this signal with the camshaft position sensor signal and sets the code when the expected pulses are missing, erratic, or out of sync.

SystemPowertrain

Code typeNissan specific

SeverityMedium

Fix difficultyIntermediate

AreaIgnition system and misfire

Symptoms you may notice

Engine cranks but does not start, or starts after a long crank
Intermittent stalling while driving or at idle
Rough running or misfire due to incorrect ignition timing
Reduced engine power or limp mode
Tachometer needle fluctuating or dropping to zero
Often no symptoms besides the warning light, especially if the fault is intermittent

Common causes, most likely first

Faulty crankshaft position sensor (internal failure or damaged connector)
Damaged or corroded wiring in the sensor circuit (open, short, or high resistance)
Metal debris or damage on the sensor tip or reluctor ring
Poor electrical connection at the sensor or ECM
Failed ECM (rare, but possible if all other checks pass)
Aftermarket sensor with incorrect signal output

How to diagnose and fix it

Scan all modules for stored codes and freeze-frame data to confirm P1335 is current
Visually inspect the crankshaft position sensor and its wiring for damage, corrosion, or loose connectors
Measure sensor resistance and compare to Nissan specifications (typically 500–700 ohms, but verify for your model)
Check for metal debris on the sensor tip and clean or replace if contaminated
Perform a wiggle test on the sensor harness while monitoring live data to detect intermittent faults
Check signal output with an oscilloscope or lab scope to verify a clean square wave
Replace the crankshaft position sensor if all electrical checks pass and the signal is erratic

Crankshaft sensor faults that fool technicians

A failing crankshaft position sensor can test good when cold but break down when hot, so always test the sensor after the engine reaches operating temperature.
Metal shavings from a worn reluctor ring or recent engine work can stick to the magnetic sensor tip and cause a weak signal without any visible wiring damage.
The ECM may set P1335 due to a camshaft position sensor fault because it cross-checks both signals; always diagnose both sensors before replacing parts.
Aftermarket crankshaft sensors for Nissan engines often have incorrect resistance or signal shape, causing repeat failures; genuine or OEM-equivalent sensors are strongly recommended.
A loose or damaged flywheel or flexplate can produce an erratic crankshaft signal that mimics a sensor failure, so inspect the ring gear if the sensor and wiring test good.

Can I keep driving with P1335?

If the engine starts and runs without stalling, you can drive cautiously to a repair shop, but avoid high speeds and heavy loads. If the engine stalls frequently or will not start, do not drive; have the vehicle towed to prevent a dangerous loss of power.

Tools that help

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Guidance is general and written for Nissan vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.