Diagnostic Mode - 2002 Chevrolet Corvette Z06 Long-Term Road Test

2002 Chevrolet Corvette Long Term Road Test

2002 Chevrolet Corvette Z06: Diagnostic Mode

March 23, 2011

z06 codes diagnostic mode.JPG

After viewing Mr. Oldham's video in which our longterm 2002 Corvette Z06 flashed up two communiques, I became curious.

Recall that the first message was "Service Active Handling" and the other was "Service Vehicle Soon."

Now, neither of these alerts lit up the check engine light, but perhaps a code or two was stored. So I placed the Z06 into 'diagnostic mode' by threatening to yank off its intake manifold again (actually I followed the instructions here).

It vomited up sixteen 'history' codes (15 of which pertain to 'loss of communication' among the various subsystems) and no 'current' codes. The remaining code (28-TCS C1287 H) for steering sensor rate malfunction mightcouldpossiblymaybe have something to with the "Service Active Handling" message.

My guess: a ground wire is loose somewhere. We'll have it checked out.

Jason Kavanagh, Engineering Editor

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