P0366 OBD-II Trouble Code: Camshaft Position Sensor "B" Circuit Range/Performance (Bank 1)

Our certified mechanics come to you · 12-month, 12,000-mile warranty

SCHEDULE P0366 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0366 code

P0366 is a diagnostic trouble code (DTC) for "Camshaft Position Sensor "B" Circuit Range/Performance (Bank 1)". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$70.00$30.00
Toyota$70.00$30.00
BMW$70.00$30.00
SCHEDULE P0366 DIAGNOSTIC Get a fair and transparent estimate upfront

check engine light

P0366 code definition

The P0366 code is defined as an incorrect voltage reading from the camshaft position sensor circuit, specifically for the engine bank 1 camshaft sensor B.

What the P0366 code means

In order to control fuel injection and ignition, the ECM detects the rate at which camshafts spin through camshaft position sensors. These sensors send a signal to the ECM within the first few seconds of ignition. The ECM compares the data to the manufacturer’s specifications, and if the values are off by more than 10% (either high or low), the ECM assumes that there is a fault in the camshaft. The signal is sent to the PCM, which stores the P0366 code.

What causes the P0366 code?

The most likely cause of an abnormal voltage reading in the camshaft position sensor circuit is oil or engine fluid that has leaked onto electrical components and caused shortages, or has caused the camshaft position sensor to go bad.

Other causes may include:

  • Faulty crankshaft sensor
  • Shorted or open wiring
  • Damaged electrical connectors
  • Faulty starter motor
  • Faulty starting system circuit
  • Dead or weakened battery
  • Open or shorted camshaft position sensor harness

What are the symptoms of the P0366 code?

In addition to the illumination of the Check Engine light, the P0366 code will usually be preceded by delayed engine starting, an inability to accelerate smoothly, rough idle, an overall decrease in engine performance, or a stalled engine.

How does a mechanic diagnose the P0366 code?

After an OBD-II scanner verifies the P0366 code, a mechanic should begin with a visual inspection of all the wiring, connectors, and other electrical components. Any damaged elements should be replaced, reconnected, or repaired as necessary. They should then clear the code and retest the system. If the code is stored in the PCM again, there is a fault that needs a more in-depth diagnosis and repair.

Common mistakes when diagnosing the P0366 code

If the PCM has stored the P0366 code, technicians may immediately assume that the camshaft position sensor, or the sensor circuit, is faulty, and will replace these items before performing a thorough diagnosis. However, the most common cause of this code may be an oil leak or engine fluid leak, and replacing these parts will result in the code returning once the liquid has damaged the new parts.

How serious is the P0366 code?

If the P0366 code is being detected, it is important to seek a repair as soon as possible. Without the ability to properly control fuel injection and ignition, the vehicle will not perform as it should. In addition to decreased power and rough handling, the car may simply lose power altogether and enter a no start condition. Repairing the cause of this code is important for maintaining driveability.

What repairs can fix the P0366 code?

There are many ways that a technician can address a P0366 code detection. They include:

After each repair is attempted, the code should be cleared from the PCM and the system should be retested. This procedure helps pinpoint the exact cause of the code, and ensures that the system has been properly repaired.

Additional comments for consideration regarding the P0366 code

When replacing camshaft position sensors, sensor circuits, or other components, most manufacturers recommend replacing the same part in the crankshaft system. These parts work best when they have the same amount of wear.

Need help with a P0366 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

P0366
trouble codes
Check Engine Light

Fast and easy Check Engine Light is on Inspection service at your home or office.

SCHEDULE P0366 DIAGNOSTIC
Get a fair and transparent estimate upfront

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.5/5

Number of Reviews

3,578

Rating Summary
3,265
157
41
23
92
3,265
157
41
23
92

Tien

20 years of experience
746 reviews
Tien
20 years of experience
All services we have received have been excellent!!
2010 CHEVROLET SILVERADO 1500 - CHECK ENGINE LIGHT IS ON - HAYWARD, CALIFORNIA

Chet

38 years of experience
393 reviews
Chet
38 years of experience
was on time, friendly, diagnosed situation quickly and offered advice. happy with services
2008 BMW 328I - CHECK ENGINE LIGHT IS ON - SPRING VALLEY, CALIFORNIA

Anthony

15 years of experience
5 reviews
Anthony
15 years of experience
Great mechanic, great communication, and very patient.
2013 CADILLAC ATS - CHECK ENGINE LIGHT IS ON - TAMPA, FLORIDA

Stefan

14 years of experience
366 reviews
Stefan
14 years of experience
2000 DODGE INTREPID - CHECK ENGINE LIGHT IS ON - HAYWARD, CALIFORNIA

More related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
How to Get a Louisiana Driver's Permit
s licensing program. The first step in this program is to obtain...
Veteran and Military Driver Laws and Benefits in New Mexico
The state of New Mexico offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch...

Related questions

Q: AT light and Check engine light on stuck in third gear.

A logical place to start is with a Check Engine Light inspection to see what codes might be set. Usually with something of this nature, codes will be present, and there will be a flow chart that should be used...

Q: Exssesive fuel consumption

If you are suddenly having poor fuel mileage then you should also have a Check Engine Light illuminating. The light will most likely be indicating a problem with a sensor like an O2 sensor or a mass air flow sensor....

Q: Engine fault reduced power

It sounds like you could have a sticking boost pressure actuator. Unfortunately, YourMechanic does not work on your model vehicle. I suggest having the dealership take a look at it.

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com