EGR Fault Codes: P0401, P0402, P0403, P0404, P0405 and P0409
24 August 2026
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Summary: Three of these six codes describe exhaust gas that did not move the way the ECU asked for it — P0401, P0402 and P0404.
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Diesel Pump EDC Fault Codes: P0251, P1564, P1631, P1632 and P1664
24 August 2026
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Summary: A Bosch VP44 or PSG5 diesel pump has a joint across the top of it, and working out which side of that joint your
Clutch Actuator Fault Codes: P0810, P0811, P0900, P0901, P0902, P0903 and P0904
24 August 2026
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Summary: Every code on this page is a disagreement about one number: how far the clutch actually moved. An actuator pushes the clutch, a position
Transmission Control Module Fault Codes: P0700, P0705, P0726, P0841, P0805 and P0863
23 August 2026
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Summary: P0700 is a pointer, not a diagnosis. It is the engine ECU passing on a message from the other end of the car: the
Lost Communication Fault Codes: U0155, U0140, U0121, U0126, U0100 and U3000 Explained
23 August 2026
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Summary: A lost communication fault code names a silence, not a failure. U0155, U0140, U0121, U0126, U0100 and U3000 all say the same thing about
Peugeot 3008 Warning Lights and Symbols: What Each One Means, and Why the i-Cockpit Screen Changes Where You Look
21 August 2026
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Summary: From the Mk2 in 2016, a Peugeot 3008’s instrument panel is a configurable screen rather than a set of dials — so a warning
Recent Blog Posts
- EGR Fault Codes: P0401, P0402, P0403, P0404, P0405 and P0409
- Diesel Pump EDC Fault Codes: P0251, P1564, P1631, P1632 and P1664
- Clutch Actuator Fault Codes: P0810, P0811, P0900, P0901, P0902, P0903 and P0904
- Transmission Control Module Fault Codes: P0700, P0705, P0726, P0841, P0805 and P0863
- Lost Communication Fault Codes: U0155, U0140, U0121, U0126, U0100 and U3000 Explained