Blog Categories: How-To Guides
Throttle Body Fault Codes: P0121, P0122, P0221, P0222, P0638, P2100, P2101 and P2135 Explained
Summary: A throttle body fault code tells you what the engine ECU measured, not what has failed. P0121, P0122, P0221,...
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P0101 Fault Code: Mass Air Flow (MAF) Sensor Circuit Range/Performance
Summary: P0101 is precise about one thing and silent about everything else. It says the engine ECU has compared the...
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P0171 Fault Code: Engine Running Lean (System Too Lean, Bank 1)
Summary: P0171 is not a complaint about a part. It is the engine control unit reporting that it has spent...
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How to Fix an Electric Power Steering Warning Light
An electric power steering (EPS) warning light means the control system has detected a fault and may reduce or switch...
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How To Test & Replace ABS Reluctor Rings
Summary: The ABS reluctor ring (also called a tone ring or ABS ring) is the toothed component that rotates with...
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How to Diagnose an ABS Pump Constantly Running
Summary: An ABS pump that runs continuously — humming or whirring even after the ignition is off — is a...
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