Cylinder 7 Pressure Sensor Circuit Intermittent/Erratic

Common symptoms

What you'll notice

• Check the wiring and connectors for any loose or damaged connections related to the cylinder 7 pressure sensor circuit.
• Clean or replace the cylinder 7 pressure sensor to ensure accurate readings.
• Inspect and clean the intake manifold for any clogs or blockages that may affect the cylinder 7 pressure sensor.
• Perform an engine compression test to rule out any potential issues with the cylinder's internals.

Common causes

Most likely first

1. Faulty cylinder 7 pressure sensor
2. Loose or damaged wiring/connectors in the cylinder 7 pressure sensor circuit
3. Engine misfire in cylinder 7
4. Low fuel pressure
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. Loss of power or acceleration
3. Poor fuel efficiency
4. Check Engine light illuminated
5. Rough idle