P0340 on NISSAN ALTIMA — Camshaft Position Sensor A Circuit Bank 1 or Single Sensor

Q: "What does P0340 mean on a NISSAN ALTIMA?"

"P0340 indicates: Camshaft Position Sensor A Circuit Bank 1 or Single Sensor. This is a ignition system code. 3 NISSAN ALTIMA owners have reported this to NHTSA."

Q: "What are the most common causes of P0340 on NISSAN ALTIMA?"

"Based on 3 NHTSA reports, the most commonly cited components are: Electronic Stability Control (Esc), Engine, Electrical System,Unknown Or Other,Engine. These percentages are based on the component field in owner complaints."

Q: "Is P0340 serious on my NISSAN ALTIMA?"

"Of 3 NHTSA reports for this code on NISSAN ALTIMA, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my NISSAN ALTIMA shows P0340?"

"1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare."

What P0340 Means on Your NISSAN ALTIMA

P0340 is a diagnostic trouble code indicating: Camshaft Position Sensor A Circuit Bank 1 or Single Sensor. This code relates to the ignition system system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

3 NISSAN ALTIMA owners have reported this issue to NHTSA across model years 2006-2016. Most reports come from the 2006, 2016 model years.

Real NISSAN ALTIMA Owner Reports

Source: NHTSA Complaints Database

"Dear sir/madam, i would like to take a moment and notify the problem that i have experienced recently with my 2006 nissan altima 2.5l engine. i was waiting on the signal to turn left when my car first shut off on me without any warning or signs."

— 2006 NISSAN ALTIMA owner · ELECTRONIC STABILITY CONTROL (ESC) · Filed 05/14/2016

"Wife was coming home from the airport when approaching stop sign the engine shut down without notice. "no brakes or power steering". vehicle was pushed by city workers into parking area. later on after the vehicle sat it started and we were able to get it home."

— 2006 NISSAN ALTIMA owner · ENGINE · Filed 09/21/2015

"Car will either not start or heists to start code with check engine light is P0340 for camshaft position sensor I have already replaced this once before 2yrs ago it should not need to be replaced again so soon."

— 2016 NISSAN ALTIMA owner · ELECTRICAL SYSTEM,UNKNOWN OR OTHER,ENGINE · Filed 12/21/2023

All reports filed by vehicle owners directly with the U.S. Department of Transportation.

📊 Complaint Trend by Model Year

2

'06

1

'16

Common Causes on NISSAN ALTIMA

Based on NHTSA complaint component analysis for this vehicle.

ELECTRONIC STABILITY CONTROL (ESC) 33.3%

ENGINE 33.3%

ELECTRICAL SYSTEM,UNKNOWN or OTHER,ENGINE 33.3%

What To Do Next

1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.

Frequently Asked Questions

What does P0340 mean on a NISSAN ALTIMA? ▾

P0340 indicates: Camshaft Position Sensor A Circuit Bank 1 or Single Sensor. This is a ignition system code. 3 NISSAN ALTIMA owners have reported this to NHTSA.

What are the most common causes of P0340 on NISSAN ALTIMA? ▾

Based on 3 NHTSA reports, the most commonly cited components are: Electronic Stability Control (Esc), Engine, Electrical System,Unknown Or Other,Engine. These percentages are based on the component field in owner complaints.

Is P0340 serious on my NISSAN ALTIMA? ▾

Of 3 NHTSA reports for this code on NISSAN ALTIMA, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my NISSAN ALTIMA shows P0340? ▾

1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare.