P0263

Cylinder 1 Contribution/Balance

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–222 (est.)

Symptoms

Power Loss
Increased engine vibration
Unstable idle
Increased fuel consumption
Check Engine Light Flashing

Causes

Malfunction of the fuel injector of cylinder 1
Problems with the ignition system (plugs, coil)
Low compression in cylinder 1
Vacuum leak
Malfunction of sensors (oxygen, detonation)
Dirty or damaged throttle valve

How to Fix

Check the condition of the spark plug in cylinder 1
Test the ignition coil and high-voltage wires
Check the injector of cylinder 1 for contamination or malfunction
Measure compression in cylinder 1
Scan the ECU for other fault codes
Check the intake manifold for leaks
Clean throttle body

Related codes

P0301 P0201 P0171 P0172