Question about Volvo S60
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Posted on Jan 02, 2017
The catilytic convertor is at fault and needs replacing.
Have it checked first for a 02 sensor can throw this code as well. If the convertor is turning red on the outside it is junk status. Also the engine will sound like its starving for fuel
Posted on May 17, 2010
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A/T Diagnosis Communication Line Malfunction Possible Causes:
Trouble Code: P0100
Mass Airflow Sensor Circuit Malfunction
Air Intake leaks located after the MAF sensor assembly MAF sensor signal circuit is open, shorted to ground or power MAF sensor has failed PCM has failed
Trouble Code: P1605
TCM communication line circuit is open or shorted to ground TCM communication line circuit shorted to VREF or power (B+) TCM or PCM has failed TSB 01-004 (01/01) contains information related to this code
For the P0100, check the connector on top of the MAF sesnor for looseness or corrosion. Connector is on top in piocture below.
A/T Diagnosis Communication Line Malfunction
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