Powertrain, generic (extended)

P2696 Injector Data Incompatible

Check engine lightOn

EmissionsRelevant

Drive cycleNot required

Limp modeNo

P2696 is the collective version of P268C–P2695: the controller rejects stored injector correction data without naming a cylinder. That suits systems that check the data block as a whole, or engines with more than ten cylinders. No manufacturer documents P2696 publicly; GM and Ford use the per-cylinder codes instead. CARB allows a maker to flag only the minimum number of wrongly compensated injectors that raises emissions, which can make a shared code sensible. A real case of lost data is Mercedes-Benz campaign NCU-2023060006: on 2012 S-Class diesels the six injector codes could vanish during an emission software update, with a MIL and sometimes louder or rougher running.

Likely causes

Injector codes lost during a software update or controller replacement

Injector replaced without programming its code

Corrupted injector data block in the controller

Symptoms

Check engine light on
Louder engine noise or rough running

Repair estimate

DifficultyMediumWorkshop job

Parts and labour€50–300

Time0.3–1.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

fuel injectorscontrol module

Related codes

P268A P268C P2693 P2695

References: law.cornell.edu, static.nhtsa.gov, fordservicecontent.com.