2000 Volvo S40 Error codes

2000 VOLVO S40
189,000 MILES • 4 CYL • 2WD • AUTOMATIC
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ROBERT224
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I took my Volvo and had it hooked up to a computer. The computer read off the following codes. p0133, p1618, p0500, and p0128. I know that one is the o2 sensor and the other is the speed sensor, but can you tell me what the p1618 and the p0128 is? I can't find anyone who knows.

Thank you!
Apr 25, 2010 at 5:06 PM
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JIS001
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128 is for engine coolant temperature sensor faulty signal. Mot likely fault will be a faulty thermostat. You my also need a software update if one is available? Your other code I am not familiar with. You would need Volvo to actually scan the codes to see what the Volvo code actaully is? Most likely, it is going to be related to a transmission control module fault code? For that you need a good scanner that can actually read transmission control module codes.
Apr 25, 2010 at 11:28 PM