Eleven codes got a walkthrough without new text

It turned out that some codes already had a walkthrough written — there was simply no link to it from the code page. Plus three new articles. Dead ends left: 33 out of 298.

We usually close blank spots in the reference with new articles. This time half the work turned out to be something else.

Eleven codes already had a suitable walkthrough but were never written into it. P0190 and P0193 — the fuel rail pressure sensor — with a live article on fuel pressure. P0217 — overheating — with the article on what to do on the road. P0230 and P0231 — the fuel pump circuit — with the article on relays. The same for P0431, P2200, P2201, P2263, P2270 and P2271.

The articles were written. There was no way into them from the code page. The way in matters more than the text — now it exists.

And three new walkthroughs:

Intake manifold flaps — P2004, P2006, P2008, P2015. Two opposite codes: stuck open means no low-end pull, stuck closed means it will not accelerate.

Intake air temperature sensor — P0096, P0111, P0112, P0113. With a ten-second check: on a cold car three temperatures must agree.

Secondary air injection — P0410, P0411, P0412. Why the car drives fine and still fails the emissions test.

Codes with no way forward at all: 33 instead of 55.