P0121 Code: Causes, Symptoms, and Easy DIY Fixes | How to fix p0121 Code |
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P0121 Code: Causes, Symptoms, and Easy DIY Fixes | How to fix p0121 Code |
P0121 Code: Causes, Symptoms, and Easy DIY Fixes | How to fix p0121 Code. Your car's engine control module (ECM) has detected a problem with the throttle position sensor (TPS) circuit. This is known as a P0121 code. Symptoms of a P0121 code: Check engine light Rough idle Stalling Reduced engine power Poor fuel economy Causes of a P0121 code ...
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