Blog Categories: How-To Guides
What Is a Throttle Body, and What Makes One Fail?
Summary: A throttle body is the air valve at the entrance to your engine’s inlet manifold: a round plate in...
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EGR Fault Codes: P0401, P0402, P0403, P0404, P0405 and P0409
Summary: Three of these six codes describe exhaust gas that did not move the way the ECU asked for it...
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Diesel Pump EDC Fault Codes: P0251, P1564, P1631, P1632 and P1664
Summary: A Bosch VP44 or PSG5 diesel pump has a joint across the top of it, and working out which...
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Clutch Actuator Fault Codes: P0810, P0811, P0900, P0901, P0902, P0903 and P0904
Summary: Every code on this page is a disagreement about one number: how far the clutch actually moved. An actuator...
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Transmission Control Module Fault Codes: P0700, P0705, P0726, P0841, P0805 and P0863
Summary: P0700 is a pointer, not a diagnosis. It is the engine ECU passing on a message from the other...
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Lost Communication Fault Codes: U0155, U0140, U0121, U0126, U0100 and U3000 Explained
Summary: A lost communication fault code names a silence, not a failure. U0155, U0140, U0121, U0126, U0100 and U3000 all...
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- BMW X3 Dashboard Warning Lights: What the Red, Yellow and Green Lamps Mean, and the E83 Units Behind Them
- Mercedes E-Class Dashboard Warning Lights: What the Red and Yellow Lamps Mean, and the Units Behind Them on Older E-Classes
- Audi A3 Warning Lights and Dashboard Symbols: What Each Lamp Asks of You, and the A3 Units Behind Them
- Renault Trafic Dashboard Warning Lights: STOP, the Spanner Lamp and the Main Warnings, Plus a Dashboard That Goes Silent
- VW Tiguan Warning Lights by Colour, and the DSG, Headlight and Turbo Units Behind Some of Them