code 31

Hi guys, so I'm having intermittent starting problems with my ute. 8/10 times it'll start no problem but sometimes won't crank. Red light on centre console is still flashing and after pressing unlock button on remote light goes off and starts perfectly. Checked codes and showing 31 "theft...

Hello I own a 1995 model Holden Commodore VS BT1 V8 auto I have been chasing this gremlin in the cars wiring loom for so long I've replaced dizzy every single electronic part on the motor I have replaced I have now rewired all the burnt out why is what I found when I bought the car now I go to...

Got an error 31 causing problems. Mechanic said key was at fault so got new one and guess what code 31 again. What else should I look at, I'm thinking ignition module.