OBD-II Code P0369 — What It Means & How to Fix It

What Does This Error Mean?

P0369 means the PCM is seeing an intermittent, noisy, or erratic signal from camshaft position sensor B on Bank 1. Sensor B is the exhaust camshaft sensor in a DOHC engine. Intermittent faults are the hardest to diagnose because the problem comes and goes. You may notice an occasional rough idle, brief stumble, or random check engine light with no consistent driveability symptom.

Affected Models

All 1996+ vehicles with DOHC engines and exhaust camshaft position sensors
Common in aging Toyota and Lexus VVT-i vehicles with high mileage
Common in Honda and Acura DOHC engines
Common in Ford vehicles with DOHC Ti-VCT engines
Common in any vehicle with cam sensors exposed to heat and vibration over many years

Common Causes

Failing camshaft position sensor with an intermittent internal break in the signal element
Loose or partially unseated harness connector that makes and breaks contact intermittently
Wiring harness with an intermittent open circuit — a wire broken inside the insulation
Oil contamination slowly degrading the sensor signal quality over time
Metal debris partially blocking the reluctor ring and causing occasional signal dropouts

How to Fix It

Start by thoroughly inspecting the camshaft position sensor B connector. Wiggle the connector while the engine is running and observe if idle quality changes. An intermittent connection will often cause the engine to stumble or the scanner to show the cam signal dropping in and out.

This wiggle test is the fastest way to find an intermittent connector issue. If you can induce the fault by moving the connector, the fix may be as simple as repairing or replacing the connector.
Inspect the wiring harness from the sensor back toward the PCM. Look for spots where the harness is kinked, bent sharply around a corner, or secured too tightly against a bracket. These spots can have internal wire breaks that only open up under certain conditions.

Use your hands to flex the harness in suspicious areas while watching a live data stream on a scanner. A wire broken inside the insulation will show a momentary loss of signal when you flex the harness at that spot.
Check for oil contamination at the sensor. Remove the sensor and inspect the tip and the bore for oil leakage. If a leaking valve cover gasket is saturating the sensor with oil, the contamination causes intermittent signal degradation over time.

If you find oil at the sensor, clean the bore, replace the valve cover gasket, and install a new sensor. An oil-contaminated sensor cannot be reliably cleaned and reused.
Replace the camshaft position sensor B even if it appears physically fine. Intermittent failures inside the sensor are not visible externally. Cam sensors are relatively inexpensive, and replacement is the quickest way to rule out the sensor as the cause.

If the car is high mileage and the sensor has never been replaced, do it. The cost is low and the swap will either fix the problem or rule out the sensor definitively.
After replacing the sensor, monitor the vehicle over several days and a variety of driving conditions. Intermittent codes may take time to return. If P0369 does not return within 200-300 miles of normal driving, the sensor replacement likely resolved the fault.

Keep the old code in mind. If P0369 returns even after a new sensor, have a technician use a lab scope to monitor the cam signal under all conditions, including cold starts and hot idle, to catch the intermittent failure.

When to Call a Professional

Intermittent faults are notoriously time-consuming to track down. If replacing the sensor and connector does not stop the code from returning, a technician with a lab scope can monitor the signal in real time while flexing the harness to find the intermittent break. Diagnosis for intermittent faults often takes longer than standard diagnosis — budget $100-$200. This is a case where professional tools save significant time.

Frequently Asked Questions

Why is an intermittent code harder to fix than a steady code?

A steady fault is always present — you can measure it and confirm it every time. An intermittent fault only appears under specific conditions that may be hard to recreate. It might only appear when the engine is cold, or only at certain RPM, or only when the harness flexes in a specific direction. This makes it much harder to pin down without spending time observing the system in real-time.

Can I clear P0369 and just see if it comes back?

You can, but it is not really a fix. Clearing the code without finding the cause means it will come back. It will also reset the emissions readiness monitors, which means the vehicle will fail an emissions test until enough driving cycles are completed. Fix the root cause rather than just clearing the code.

Is P0369 dangerous to drive with?

Usually not immediately dangerous. An intermittent cam signal fault typically causes momentary rough running or hesitation rather than a complete loss of control. However, if the fault becomes more frequent or persistent, it can cause stalling or no-start conditions. Get it diagnosed within a reasonable time rather than putting it off indefinitely.