How to troubleshoot the engine warning light?

1 Answers
LeBrooklyn
07/29/25 4:19pm
To troubleshoot the engine warning light, follow these steps: 1. Check the spark plugs and cylinder wires. 2. Perform a fuel pressure system test. 3. Inspect the fuel injectors for each cylinder. 4. Examine the fuel pump and its circuit. 5. Check the cylinder pressure, intake and exhaust valve clearance, fuel vapor control solenoid valve, EGR valve cylinder operation, and whether the intake manifold is leaking. If the warning light appears on the dashboard while driving, try the following steps: 1. Pull over and turn off the engine for 5-10 minutes. Without pressing the brake, press the start button or turn the key halfway to the 'on' position without engaging the clutch. The car will perform a self-check upon powering up. Wait 5-10 seconds to see if the warning light turns off. 2. If other warning lights remain on, take the car to a 4S shop or repair shop to check the relevant modules and parts. If only the engine warning light stays on, restart the engine and observe if it remains lit. 3. If the engine warning light turns off, no further action is needed. If it stays on, take the car to a 4S shop or repair shop to inspect the engine-related components and modules.
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