Pecus error e gearbox fault - Jaguar Cars & Trucks

generic answer -- check fuses relays and fluids --scann vehicle for trouble codes --check and inspect brake system including abs system

the gearshift will not rise if you have gearbox problem you need to get the fault codes out the system to help sort it out best going to a jag dealer for help you can get it out of park to move it there is a release cable under the panel in the center glovebox red lever pull it up that then releases the park brake pawl in the gearbox

if your refering to the auto gearbox then sensors inside gearbox .Normally when this fault code shows a nd gearchanges not quite right i drain gearbox clean filter in the sump then refill ,run angine in drive on jacks and then check level again ,then again after a 10 min run .

try changing the transmission control module as it is the unit that reports incorrect ratios and other transmission faults.

thats a problem with one of the modules on the can or scp network it is saying there is a programming error, or the module does not belong to this car. have you changed a module of any sort/? they are all connected and will only function on the car they belong to unless they are reprogrammed with jag diagnostic equipment ie. ids software. its all part off the antitheft system

This is a network communication problem with the ECM, first check the battery voltage for a low voltage, start the car and recheck it should be about 13 to 14 volts if it is ok you may need a dealer. Good luck.

You must have the dealer scan the system with a special tool and based on what is read with the scanner diagnose the problem.

Hello! The PERCUS...E...Code is an Electronic Control Module (ECM) programming error or failure...The grounding may be at fault...Using an ohm meter set on X10 scale...Read from center of negative battery post to bare metal on chassis and then to engine block...Should read very near zero ohms...If these readings are OK...The ECM needs to be re-flashed (reload software) at a dealership.

MAP reading across wire colors Black/White (+) and Black/Green (-) at idle should be 1.1 volts...(.99 is a correct reading)...Throttle up and voltage increases to 3.75 volts w/o erratic movement...This indicates MAP is OK...

Guru.............Saailer

I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

This is a problem associated with Programmable Electronic Control Unit System and needs to be diagnosed by the dealership.

thats interesting, the pecus lighting up on your dash means a control module wasnt fully programed, or in the process of being programed. ive only seen that pecus warning light once when a module failed to download the proper information. The low oil light and this pecus fault are not related.

The only way to get that light off is to bring it to a jaguar dealership.

In my case went this happened to me i was performing a recall that had me go though this download process. Now, if this problem applies to the recall then jaguar will pay for the repair and all you have to pay for is the diagnosis fee which is different with any dealership.

You can check on-line, for have the dealership look to see if their are any recalls on your vehicle.