XJ XJ6 / XJ8 / XJR ( X350 & X358 ) 2003 - 2009

Locked codes

Old Jul 15, 2014 | 09:27 AM
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Default Locked codes

My '04 XJR has some locked DTC's that I can't find a way to clear with WDS. The codes are P0300-0308, misfire on each cylinder and multiple random misfire. They popped up last weekend along with the P0121 error.

Each DTC has the locked symbol in WDS. I read and then cleared the FDR, then reflashed the ECU. The codes still won't clear. Any ideas?
 
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