Vehicle Questions and Answers
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You can locate the 2003 Honda Element's engine control unit (ECU) behind the glove box in your car. If you need to replace it, you can often find a used one on eBay for around a hundred dollars. I recommend avoiding new ones due to the age of your vehicle as they are likely to be expensive refurbished units. Signs that you may need to replace the ECU include the check engine light coming on with random diagnostic trouble codes, frequent engine stalling or misfiring, or experiencing erratic engine behavior and performance issues.
I didn't receive the code.
In the 2003 Honda Element, you'll find the engine control module (ECM) positioned behind the dashboard close to the computer.