P02A7 OBD-II: Cylinder 4 - Fuel Trim at Min Limit

P02A7 Severity

Urgent

Should you fix P02A7 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 P02A7?

The engine control module (PCM) uses multiple sensors to determine the required amount of fuel needed to keep the engine running efficiently. If the PCM cannot achieve the desired balance between fuel and air, it will set code P02A7.

OBD II Fault Code

OBD II P02A7

OBD-II Code Decreased engine performance is defined as a Cylinder 4 - Fuel Trim at Min Limit

Decreased engine performance Symptoms

Decreased engine performance
Increased fuel consumption

Common Problems That Trigger the P02A7 Code

Clogged air filter
Damaged or contaminated spark plug
Engine sensor failure
Exhaust leak
Fuel injector failure
Internal engine failure
Powertrain Control Module (PCM) software needs to be updated
The fuel does not meet the manufacturer's requirements

Common Repairs Needed for the P02A7 Code

Fuel Injector Replacement

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