Error Code P0174: Meaning, Causes, and Solution
You’ve been driving for a while and the idle speed feels unstable. The engine accelerates weaker than usual. Then the check engine light comes on. You connect your scanner and...
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Diagnostic Tools
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Error code P0430: meaning, causes, and solution
You’ve been driving worry-free for months, then one morning the engine light comes on. The car drives fine, you don’t really notice anything. You connect your scanner and see P0430....
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Error code P242F: meaning, causes, and solution
You have been driving a diesel for a while that occasionally emits a smoke cloud. Then the engine light comes on and the power drops. You connect your scanner and...
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Error Code P2002: Meaning, Causes, and Solution
You drive your diesel for a while with many short trips around town. One day the check engine light comes on, sometimes with a second DPF light. You connect your...
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Error Code P0404: Meaning, Causes, and Solution
You’re driving calmly on the highway and suddenly the engine idles unevenly at the stoplight. The engine light is on. You connect your scanner and see P0404. Don’t panic: this...
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Error code P0402: meaning, causes, and solution
You’re stopped at a traffic light and the engine suddenly runs rough, as if it’s about to stall. When accelerating, the car feels weak. You connect your scanner and see...
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Error code P0562: meaning, causes, and solution
You start in the morning, the dashboard lights flicker briefly, and the engine cranks slowly. A few trips later, the engine light comes on. You connect your scanner and see...
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Error Code P0455: Meaning, Causes, and Solution
You fill up, screw the cap back on, and drive away. Two days later, the check engine light suddenly comes on. You plug in your scanner and see P0455. Don't...
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Error Code P0300: Meaning, Causes, and Solution
You feel the car jolt slightly when accelerating, and sometimes the check engine light flickers. You plug in your scanner and there it is: P0300. This is a code you...
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Error Code P0171: Meaning, Causes, and Solution
Your check engine light is on and your car occasionally runs rough at idle. You pull the code and see P0171. No need to panic: this is a common fault...
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Error Code P0420: Meaning, Causes, and Solution
You've been driving around for a while when suddenly your check engine light comes on. You scan the code and see P0420: your catalytic converter isn't performing up to standard....
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Reading and Clearing Error Codes: How to Do It Yourself
A warning light comes on your dashboard and your heart skips a beat. Do you need to go to the garage immediately? Often not. With an OBD2 scanner, you can...
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