Engine code
P0365: Camshaft position sensor B circuit problem (bank 1)
How this range is built
| Part of the job | Low | High |
|---|---|---|
| Parts | $35 | $120 |
| Labor: 0.6 to 1.3 hours × $125 to $175 an hour | $75 | $228 |
| Fees: shop supplies, disposal, diagnostics | $0 | $20 |
| Total, rounded | $110 | $370 |
The hourly rate is the BLS Occupational Employment and Wage Statistics, May 2025 average pay for this trade in Boston, $31.54 an hour, times 4 to 5.5 to cover what a shop bills (overhead, tools, insurance, profit). Parts are a band from budget aftermarket to the manufacturer part. Full method.
Not a repair shop, estimates only. Typical range, estimate. Not a quote. Your car, parts and shop change the number.
This is the range for the most common fix, camshaft position sensor replacement. Which repair your car needs depends on a proper diagnosis.
Many engines have two camshaft sensors on each bank, and this code points to sensor B on cylinder 1's bank. It is usually the exhaust camshaft on engines with two cams. The computer uses it to time fuel and spark, and it has seen a faulty or missing signal.
- Safe to drive?
- Short trips only
- Most common cause
- Failed cam position sensor
May run fine or may stall or hesitate. Drive gently to a shop.
What you may notice
- Hard starting
- Stalling
- Rough running
- Check-engine light
Common causes, most likely first
- Failed cam position sensor
- Wiring or connector fault
- Timing chain stretch or jump
- Oil leaking into the connector
Check this first
Look at the connector on the sensor for oil, which can leak in from a valve cover and ruin the signal. Ask the shop to verify cam timing on a scan tool or scope before replacing the sensor alone.
Other repairs that sometimes fix P0365
| Repair | Typical range, Boston |
|---|---|
| Timing chain replacement | $1,250 to $2,850 |
| Diagnostic scan (check engine light) | $60 to $290 |
Before you pay
- Ask the shop what test showed this part is the cause, not just that the code appeared.
- Ask for parts and labor listed separately, and for the hours.
- Ask for a written OK before any extra work. Massachusetts rules require written authorization before repairs.
Got a quote already? Check it against the range. Want to see if your car has a recall tied to this problem? Check recalls by VIN.
Need to read a code yourself? OBD-II scanners on eBay (affiliate link, disclosure).
P0365 questions
Cam or crank sensor?
The code names which one. They work together to tell the computer where the engine is in its cycle, so a shop compares both signals at once to find which side is out of line.
Can it leave me stranded?
Yes. On some cars the engine will not start if this signal is lost, and others stall and refuse to restart until they cool down. Avoid long trips until it is fixed.
Is the chain at fault?
Sometimes, particularly if you hear a rattle at start-up. A stretched chain lets the cam drift, which changes the signal pattern. A shop can read the pattern to tell chain trouble from a bad sensor.
How much does it cost to fix P0365?
The most common fix, camshaft position sensor replacement, has a typical range of $110 to $370 in Boston. It is an estimate built from parts prices and local labor wages, not a quote. Your car and shop change it.
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Code meaning written in our own words. Some codes mean different things on different makes, so check your scan tool or manual. Not a repair shop, estimates only.