Cylinder 3 Pressure Sensor Circuit

Common symptoms

What you'll notice

• Check and inspect the wiring and connections for any damages or loose connections.
• Replace the cylinder 3 pressure sensor if it is found to be faulty or malfunctioning.
• Inspect and clean the intake manifold, throttle body, and fuel injectors for any build
• up or clogging.
• Perform a compression test on cylinder 3 to ensure there are no internal engine issues.
• Reset the car's ECU (Engine Control Unit) by disconnecting the battery for a few minutes and reconnecting it.

Common causes

Most likely first

1. Faulty or damaged cylinder 3 pressure sensor
2. Wiring or connection issues in the cylinder 3 pressure sensor circuit
3. Low engine oil level or pressure affecting cylinder 3
4. Engine misfire in cylinder 3
5. Faulty engine control module (ECM) or powertrain control module (PCM)

How to diagnose & fix

Work through it in order

1. Engine misfires or runs rough
2. Decreased fuel efficiency
3. Engine hesitation or jerking during acceleration
4. Stalling or difficulty starting the engine
5. Illumination of the check engine light