bad o2 sensor on left bank
P0440 = EVAP Emission Control System Malfunction. The Check Engine light would illuminate and you would fail an emissions test.
P0442- Evaporator system small leak. P0440- Evaporator system malfunction.
Trouble code P0171 means: Fuel Trim System Lean (Bank 1 Trouble code P0440 means: EVAP System No Flow During Purge
There are dozens and dozens of causes for the check engine light to stay on. You need to have the computer checked for codes to know possible causes.
The engine is overheating. The check engine light is not on because you have no problem with the emissions system which this light monitors.
Check your gas cap.....My check Engine light always comes on if it is loose or not on at all.
Your bad muffler might be part of the reason your check engine light comes on. Usually, your bad muffler causes something else to go wrong and that causes your check engine light to come on. Problems cascade.
The check engine light on a 2003 Honda Accord will be triggered when something on the engine is malfunctioning. To rid the check engine a light the ECU will need to be reset.
The Check Engine Light (CEL) lights up when the Engine Control Module (ECM) detects a problem related to emissions or performance.
There are pages and pages of causes for a check engine light. You need to have it checked for codes with a scanner to know what to diagnose. After the repair you can clear the code with a scanner.
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.
The Check Engine light comes on when the ECU detects a problem with the emissions system. Seek professional help.