Answer in brief: The Bank 1 cam sensor is the Camshaft Position Sensor for the bank that contains cylinder 1 on your engine. On most V-type engines, Bank 1 corresponds to the side with cylinder 1, and that bank's cam sensor is labeled Bank 1 CMP sensor.
What this means in practice: Vehicles with dual-bank architectures use separate cam sensors for each bank to precisely time intake and exhaust events. The exact sensor location can vary by make and model, so always refer to the service manual for your vehicle to locate the Bank 1 CMP sensor.
Defining Bank 1 and Its Sensor
Before identifying the sensor on your engine, understand these basics about Bank 1.
- Bank 1 is the engine side that contains cylinder number 1.
- Most modern DOHC engines have one Cam Position Sensor (CMP) per bank—Bank 1 CMP for Bank 1, Bank 2 CMP for Bank 2.
- The Bank 1 CMP is typically mounted on the Bank 1 camshaft’s cylinder head or timing gear cover. Exact position varies by model.
- If cylinder 1 is not obvious, consult the owner's manual or a factory diagram to confirm which side is Bank 1.
Understanding these points helps you identify which sensor is Bank 1 on your specific vehicle.
Locating the Bank 1 Camshaft Position Sensor
Use these guidance tips to physically locate the sensor on most engines.
- Look on the Bank 1 side of the engine’s cylinder head or timing cover for a small electronic sensor with a multi-pin connector.
- The sensor is usually mounted close to the camshaft gear or on the cam cover of Bank 1, with a 2- to 3-wire or 4-wire harness feeding it power, ground, and signal.
- Because layouts vary, consult the service manual for your vehicle to see the exact mounting spot and the sensor’s orientation.
Documenting the location will help you identify Bank 1 cam sensor quickly and avoid mislabeling the sensor.
Verifying Bank 1 CAM Sensor with Diagnostics
If you want to confirm which sensor is Bank 1 using diagnostics, you can follow these steps.
- Connect a scan tool that can read cam/position data and live sensor values. Look for Bank 1 CMP or CAM1 readings alongside Bank 2 CMP/CAM2 readings.
- When turning the engine, Bank 1 CMP should report a consistent signal aligned with the cam’s position; a malfunctioning sensor will show erratic or no readings.
- Power and ground checks: Use a multimeter to verify that the sensor receives the correct voltage and has a solid ground, as specified in the service manual.
With diagnostics and the service manual, you can confirm which physical sensor is Bank 1 on your vehicle and troubleshoot any CMP-related issues.
Summary
The Bank 1 cam sensor is the Camshaft Position Sensor for the bank of cylinders that includes cylinder 1. On most dual-bank engines, Bank 1 is the side with cylinder 1, and there is a dedicated CMP sensor for that bank. Location and wiring vary by make and model, so consult the service manual for your vehicle to identify and diagnose Bank 1 CMP sensors accurately.
Is bank 1 sensor 1 front or rear?
The 1st sensor is located closest to the engine and the last is located at the rear of the exhaust system. Some Diesel engines have a lot of exhaust temperature sensors and it can use Sensor 1 – 2 – 3 – 4 etc. In these cases = Sensor 1 is located nearest the engine and the last sensor in the read of the exhaust system.
Which camshaft sensor is bank 1 sensor b?
Bank 1 is the side of your engine that has the cylinder 1, while sensor B refers to the exhaust camshaft side.
Is P0340 bank 1 or bank 2?
Your camshaft position sensor monitors valve timing and sends precise signals to the computer. P0340 specifically indicates the sensor on Bank 1 (the engine side with cylinder #1) isn't sending proper signals.
Where is camshaft sensor Bank 1?
And then should be able to wiggle this free. So that should pop. Out. It's going to look like.