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diognostic code reading? 200 1990

posted by  Ron J on  Sat Sep 14 11:50 CST 2013
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last visit: Fri Oct 24 13:20 CST 2014
[RELATED]

Panelmon,

Per Volvo green manual:

DTC 311

If the engine speed is over 2100 rpm, the load signal is in the part-load range and the control module does not receive a signal from the speedometer for 8 seconds the DTC is logged.

Causes of fault:

Break or grounding in the wiring from the combination instrument.

Break or grounding in the wiring between the combination instrument and the sensor.

Fault symptoms:

Idling problems.

Also the oxygen sensor should oscillate between .1 and .9v fairly quickly.

Hope this helps,

Ron J






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