'95 OBDII?
Thread Starter
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Joined: Sep 2006
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From: San Diego
'95 OBDII?
I took my car in for an air conditioning problem and the technician said he'd plug in the OBDII reader, and I said its a '95 its OBDI, and he showed me the plug, plugged in the reader and told me my in-dash temp sensor was the problem. He said that for the '95 model year Porsche was required to make 20% of their cars OBDII. Has anyone ever heard this before?
Rennlist Member
Joined: Apr 2004
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From: Oslo, Norway
Maybe this is a misunderstanding and related to the physical interface/connector. The 993's are all the same with respect to implemented protocols and electrical connections. Early 993's and 964 have a round 19-pin connector and not the more modern OBD2-style connector. These round connectors are often called OBD1, and were the closest Porsche could come to a OBD specification at those early stages. The circuitry and software interface in the car is essentially the same.
OBD1 and OBD2 specifications aren't all that different, and most cars with OBD1 have functionality and protocols implemented that really belong to the OBD2 specification.
By the way, thechief, I'll bet your inboard temp sensor is simply dirty, it can easily be cleaned: CCU repair page
Regards,
Tore
OBD1 and OBD2 specifications aren't all that different, and most cars with OBD1 have functionality and protocols implemented that really belong to the OBD2 specification.
By the way, thechief, I'll bet your inboard temp sensor is simply dirty, it can easily be cleaned: CCU repair page
Regards,
Tore
Drifting
Joined: Sep 2006
Posts: 2,413
Likes: 8
From: San Diego, CA
I took my car in for an air conditioning problem and the technician said he'd plug in the OBDII reader, and I said its a '95 its OBDI, and he showed me the plug, plugged in the reader and told me my in-dash temp sensor was the problem. He said that for the '95 model year Porsche was required to make 20% of their cars OBDII. Has anyone ever heard this before?
It's squeaky anyways and I'm looking for a reason to get in there...
Thread Starter
Rennlist Member
Joined: Sep 2006
Posts: 24
Likes: 0
From: San Diego
my symptom, and this is more pronounced on hot days, turn A/C on and over time it gets less cold, the pressures are all good, OBD error code says dash sensor is inop. Are you having similar problem?
Rennlist Member
Joined: Apr 2004
Posts: 2,570
Likes: 538
From: Oslo, Norway
Easy fix thechief! And a very common problem. Dirty sensor inside the air duct in the CCU.
Have a look here: My CCU repair page
Have a look here: My CCU repair page
Thread Starter
Rennlist Member
Joined: Sep 2006
Posts: 24
Likes: 0
From: San Diego
Maybe this is a misunderstanding and related to the physical interface/connector. The 993's are all the same with respect to implemented protocols and electrical connections. Early 993's and 964 have a round 19-pin connector and not the more modern OBD2-style connector. These round connectors are often called OBD1, and were the closest Porsche could come to a OBD specification at those early stages. The circuitry and software interface in the car is essentially the same.
OBD1 and OBD2 specifications aren't all that different, and most cars with OBD1 have functionality and protocols implemented that really belong to the OBD2 specification.
By the way, thechief, I'll bet your inboard temp sensor is simply dirty, it can easily be cleaned: CCU repair page
Regards,
Tore
OBD1 and OBD2 specifications aren't all that different, and most cars with OBD1 have functionality and protocols implemented that really belong to the OBD2 specification.
By the way, thechief, I'll bet your inboard temp sensor is simply dirty, it can easily be cleaned: CCU repair page
Regards,
Tore
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