The OBD2 code P0369 points to an intermittent issue with the Camshaft Position Sensor “B” Circuit on Bank 1 of the engine. This sensor is pivotal in managing the engine’s timing by monitoring the position of the camshaft and relaying this information to the Engine Control Module (ECM).
An intermittent fault indicates that the sensor’s signal is sporadically lost or erroneous, which can lead to various engine performance problems, including erratic idling, misfiring, and even difficulty starting the engine.
P0369 quick overview
| Meaning | P0369 – Camshaft Position Sensor “B” Circuit Intermittent (Bank 1) |
| Is it serious? | Yes, this code can lead to noticeable engine performance issues and should be addressed promptly. |
| Possible causes | – Faulty camshaft position sensor – Incorrectly installed cam sensors – Wiring or connector issues (shorts, opens, or poor electrical connections) – Sludge buildup affecting sensor operation |
| How to diagnose? | Inspect wiring and connectors for damage or corrosion Check sensor installation for correct placement and orientation Perform a rationality check on cam and crank sensor outputs Use OE sensors for replacement to ensure compatibility Verify engine timing and camshaft sensor alignment with a scope |
P0369 Meaning
Imagine your engine as a finely tuned orchestra, and the camshaft position sensor as the conductor. If the conductor starts missing beats or gives the wrong cues (like what happens with the P0369 code), the orchestra’s performance suffers.
The engine relies on precise timing to run smoothly, and when the sensor’s signals are inconsistent, it can cause the engine to act up in various ways. It’s like trying to dance to a song that keeps skipping—frustrating and inefficient. Addressing this issue quickly helps restore harmony and ensures your vehicle performs as it should.
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How to fix P0369 – learn from mechanics
I looked into P0369 service cases at iatn.com website where in the private forums the mechanics seek advice from other mechanics. I looked up a bunch of cases to help you decide how to fix your issue and see what would a real mechanic do to solve it.
Case #1: BMW
Vehicle information 2001 BMW 325i 2.5L
- Engine: 2.5L / 6 cyl / Gas / DOHC
- Transmission: 5-speed Automatic Transmission (Electronic)
- Mileage: 26,210 mi
Issue + repair history
- MIL Lamp on.
- OBD2 code: PO369 – Cam Position Sensor failure bank1.
- Replaced cam sensor bank 2 initially.
- Customer returned, replaced the other cam sensor, resolving the issue.
Other OBD2 Codes + Test Results
- OBD2 Code: PO369 – Cam Position Sensor failure bank1.
Mechanic suggestions
- Consider sludge buildup in valve/cam area due to maintenance history.
- Check BMW’s service campaign for potential incorrect P codes.
- Perform rationality check on cam sensor phase shift and crank sensor output.
- Replace both intake and exhaust cam sensors.
- Use OE sensors from the dealer to avoid aftermarket brand issues.
Final fix
- Replaced both cam sensors (intake and exhaust) with OE sensors from the dealer.
Case #2: Ford
Vehicle information 2011 Ford F-150 XL 5.0L
- Engine: 5.0L
- Location: Franklin, Tennessee
Issue + repair history
- After installing heads due to bad valves and misfire on cylinder #8, receiving codes P0340, P0344, P0369, P0365, and P0315.
- Ran crank relearn, resolved P0315.
- Noticed cam sensors were installed incorrectly, with intake and exhaust cam sensors on bank 1 reversed.
Other OBD2 Codes + Test Results
Mechanic suggestions
- Check for missed ground wire.
- Test for power on the sensors’ wires and ensure proper voltage.
- Verify cam desired and cam actual PIDs on scanner to check timing.
- Scope camshaft sensor bank 1 and recheck timing and harness connectors.
- Confirm sensors and plugs compatibility to prevent incorrect installation.
Final fix
- Reversed intake and exhaust cam sensors on bank 1, causing incorrect installation. Reinstalled correctly, resolving the issue.
Case #3: Jeep
Vehicle information 2014 Jeep Wrangler Unlimited Sport 3.6L
Issue + repair history
- Continued setting code P0369 for b1s2 cam despite replacing cam sensor and harness from sensor to PCM.
- Replaced cam on b1, resolving P0369 but now getting code P06dd.
Other OBD2 Codes + Test Results
- OBD2 Codes: P0369, P06dd.
Mechanic suggestions
- Check chain tensioners, oil pressure, and phaser.
- Scope cam sensor connector at PCM for signal irregularities.
- Investigate cam sprocket locking and reluctor damage.
- Verify timing components and synch issue with scope.
- Check for loose oil galley plugs and ensure correct camshaft replacement.
Final fix
- Reversed intake and exhaust cam sensors on bank 1, causing incorrect installation. Reinstalled correctly, resolving the issue.
How to diagnose P0369
I made you an overview of solving this DTC, based on all the advice that was suggested by certified mechanics to address this issue in previously mentioned service cases.
| Diagnostic Step | Brief Explanation |
|---|---|
| Check sensor installation | Ensure cam sensors are installed correctly, as reversed sensors can mimic or cause this issue. |
| Inspect wiring and connectors | Look for any signs of damage, corrosion, or poor connections that might cause intermittent signal issues. |
| Verify sensor operation with OE parts | Use original equipment manufacturer (OEM) sensors for replacements to avoid compatibility issues with aftermarket parts. |
| Scope sensor signals | Use an oscilloscope to verify the integrity and alignment of the camshaft sensor’s signal with the crankshaft sensor. |
| Confirm engine timing and sensor placement | Ensure the timing is correct and that the sensor is placed and oriented correctly, as timing and placement errors can trigger this code. |
These steps represent a blend of specific fixes and broader diagnostic advice from mechanics who have successfully resolved the P0369 code. The emphasis on correct parts, proper installation, and thorough electrical testing underlines the importance of accuracy and quality in automotive repair.
Car Diagnostics Training
- Car Electrical basics
- OBD-II scanner basics
- How to use an OBD reader
- Introduction to a Bi-directional Scan tool
- OBD scanner buyer’s guide + discounts
I test OBD-II scanners and make DIY Engine diagnostics guides to help you solve your car problems without having to depend on the mechanic. A lot of them will try to scam you or are just no help at all. About Juraj Lukacko