Thread: TD5 Injector Codes

Originally Posted by harlie

Hi

I’m helping out another member with the three amigos problem (found unusually high voltage coming from LF) - anyway also had a general fish around – Vehicle is 2002 Disco with NNN ECU
Does anyone have knowledge on what injector codes on the TD5 should be? I understand that they are a calibration code of sorts and that it’s common for all five to be different. When I read the settings of my car they are something like LH NE 2-M-C with the three groups in their own text box.
Questions:
1. What does it mean if all the codes have the last character *?
As in NG GH 4-H-*?
2. Do the three groups have a known meaning?
3. His car is 2002 disco - not update (older headlights, no EGR cooler, no Diff lock) but the ECU is NNN unit. Did any pre-update cars have NNN or do we assume that it’s been changed? Maybe codes not entered or is this all good?

Thanks

G'day Harlie.

The injector codes have, for example, a 'NG GH 4' format. (The -H-* etc on the end you have written here doesn't have a bearing on it at all.) In short, 4 alpha and 1 numeric. The numeric on the end sometimes is different to all the others, and is the individual injector 'trim' code, the ECU needs this to meter fuel accurately.
The NNN ECU's(Flashable) came out late 1A, which is mid to late 2001 onwards.

JC

JC

Also FYI if u order a new ECU for any TD5, it will be the newer version (NNN Type) as the older ones no longer exist. All Parts dept's used the last remaining versions 2yrs ago.