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1993 Volvo 245 123 code with check engine light on.. 200 1993

uid 27's pic
posted by  Art Benstein on  Wed Jul 26 18:17 CST 2023
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last visit: Fri Oct 17 20:10 CST 2014
[RELATED]

I've seen others report that same problem, where the ECT-pointing code isn't solved by changing the sensor. No confirmed causes, but several things to check:

1. Be sure the fuel rail grounds are in good shape. Each is a single wire to the eye under the bolt, but just up inside the vinyl sleeving is a splice to multiple things needing grounding.

2. Make sure you used the proper sensor; that you aren't replacing one identical to the wrong one your previous owner left you. It should have a black body, not a blue one.

3. As a last resort, monitor the voltage at the ECU connector starting with a cold engine and until it reports the DTC. Look for voltage corresponding to the numbers on the right hand side of this table.


--
Art Benstein near Baltimore

Those who race through life finish first. (Darrel Hunsbedt)





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