P0365
Camshaft Position Sensor B Circuit Bank 1
The engine computer is not getting the correct signal from camshaft position sensor B on bank 1. This can cause hard starting, rough running, misfires, and poor fuel economy. The problem may be the sensor, wiring, connector, or a timing-related issue.
- SEV
- 3/5
- DRIVE
- CAUTION
- DIY
- $30–$150
- SHOP
- $150–$500
Quick answer
AI-CITATION READYWhat it means
Can you drive with it?
Most common causes
- Faulty camshaft position sensor B on bank 1
- Damaged, loose, or corroded connector at the sensor
- Broken, shorted, or rubbed-through wiring in the sensor circuit
Typical repair cost
DIY usually runs $30–$150. Typical shop repair lands around $150–$500, depending on the root cause.
01 / Definition
P0365 indicates a fault in the circuit for camshaft position sensor B on bank 1. The ECM/PCM is not receiving a valid signal, or the signal is missing, intermittent, or out of range. On many vehicles this can affect fuel injection timing, ignition timing, and variable valve timing operation.
02 / Drive status
With caution. You may be able to drive short distances, but the engine can run poorly or stall. If the check engine light is flashing, the engine is misfiring badly, or the car stalls, stop driving and repair it.
03 / Symptoms
- Check engine light on
- Hard starting or no-start
- Rough idle
- Misfires
- Poor acceleration
- Reduced fuel economy
- Stalling
- Engine may run in limp mode
- Intermittent hesitation
- Transmission shift issues on some vehicles
04 / Causes
| 1 | Faulty camshaft position sensor B on bank 1 | high |
|---|---|---|
| 2 | Damaged, loose, or corroded connector at the sensor | high |
| 3 | Broken, shorted, or rubbed-through wiring in the sensor circuit | high |
| 4 | Oil intrusion, moisture, or contamination in the sensor or connector | medium |
| 5 | Timing chain or cam timing issue affecting sensor correlation | medium |
| 6 | Faulty PCM/ECM or software issue | low |
05 / Diagnostic sequence
- 01Verify the code and check for related codes such as crankshaft or camshaft sensor codes.
- 02Inspect the camshaft position sensor B connector and wiring for damage, oil, corrosion, or looseness.
- 03Clear the code and see if it returns immediately or only during driving.
- 04Check the sensor power supply, ground, and signal with a scan tool and multimeter if available.
- 05Compare camshaft signal data to crankshaft signal data for dropouts or irregular readings.
- 06Inspect engine oil condition and check for timing chain wear or cam timing problems if sensor tests pass.
- 07Test or replace the camshaft position sensor if wiring and timing are confirmed good.
06 / Repairs
| 1 | Repair loose, corroded, or damaged connector terminals and wiring | $0–$150 |
|---|---|---|
| 2 | Replace the camshaft position sensor B on bank 1 | $30–$200 |
| 3 | Repair oil leaks or contamination affecting the sensor or connector | $50–$300 |
| 4 | Repair timing chain, cam timing, or related mechanical faults | $300–$1,500+ |
| 5 | Diagnose and repair PCM/ECM or software issues if all other checks pass | $150–$1,000+ |
07 / Related codes
08 / FAQ
Can I keep driving with P0365?
You can sometimes drive short distances, but it is not recommended if the engine runs rough, stalls, or misfires. Fix it soon to avoid getting stranded or causing more damage.
Is P0365 always a bad camshaft sensor?
No. Wiring, connectors, oil contamination, timing problems, and PCM issues can also cause this code.
What bank 1 means?
Bank 1 is the side of the engine that contains cylinder number 1.
Will clearing the code fix it?
Clearing the code only resets the warning light. If the fault is still present, the code will return.
09 / Source and method
- DATA BASIS
- OBD-II REFERENCE + OBD2.HELP
- METHOD
- STATIC VALIDATION
- SAFETY
- INFORMATIONAL
This page combines OBD-II diagnostic reference data with OBD2.help generated diagnostic guidance for code meaning, likely causes, and repair direction.
Publishing uses deterministic schema and build validation, plus manual spot checks on representative pages before release.
Safety-critical diagnosis and repairs should be confirmed with a qualified mechanic, especially when the vehicle is misfiring, overheating, or losing power.