P0266 OBD-II: Cylinder 2 Contribution/Balance

P0266 Severity

Urgent

Should you fix P0266 yourself?

Identifying an OBD code is just the start of a complete diagnostic routine. Most trouble codes are caused by a sensor reporting a value that is out of range. Just replacing a sensor may not fix underlying issues. Be sure to understand the code, the part or system in your car that the code refers to, and the risks of delaying professional repair.

Proper diagnosis will save you time and money on unnecessary repairs.

Urgent codes indicate immediate action is necessary. These are urgent and significant malfunctions that can cause severe damage to the vehicle or harm the driver and passengers.

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What causes OBD-II fault code P0266?

When the engine control module (PCM) detects that cylinder 2 is not sufficiently contributing to keeping the engine running properly, it will set code P0266.

OBD II Fault Code

OBD II P0266

OBD-II Code Decreased engine performance is defined as a Cylinder 2 Contribution/Balance

When the engine control module (PCM) detects that cylinder 2 is not sufficiently contributing to keeping the engine running properly, it will set code P0266.

Decreased engine performance Symptoms

Decreased engine performance
Increased fuel consumption

Common Problems That Trigger the P0266 Code

Fuel injector failure
Internal engine failure
Powertrain Control Module (PCM) software needs to be updated
Wiring issue

Common Repairs Needed for the P0266 Code

OBD Code Resources

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OBD II Fault Code

OBD II P0266

OBD-II Code Decreased engine performance is defined as a Cylinder 2 Contribution/Balance

When the engine control module (PCM) detects that cylinder 2 is not sufficiently contributing to keeping the engine running properly, it will set code P0266.

P0266 OBD-II: Cylinder 2 Contribution/Balance

Should you fix P0266 yourself?

What causes OBD-II fault code P0266?

Need a P0266 diagnosis? Trust our experts.

OBD II Fault Code

Decreased engine performance Symptoms

Common Problems That Trigger the P0266 Code

Common Repairs Needed for the P0266 Code

OBD Code Resources

Need a P0266 diagnosis? Trust our experts.

Ask our experts about P0266.

Other OBD-II Codes

OBD II Fault Code

Decreased engine performance Symptoms

Common Problems That Trigger the P0266 Code

Common Repairs Needed for the P0266 Code