Question about 1999 Volvo C70
What is the cause of fault code 722 and 1618?My speedometer goes wacky and I lose power
P0722 and P1618 are both transmission related fault codes.
P1618 is the transmission control module requesting that the check engine light be turned on to alert you to the fact you have a transmission problem, the P0722 is the code that indicates the fault, this codes definition is the output speed sensor has an erratic signal, this would cause the electronic speedometer to act up and that is the problem I am sure, replace the speed sensor, it is on the transmission case, it should have a 2 wire connector going to it.
Posted on Feb 05, 2010
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Posted on Jan 02, 2017
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