DOCUMENTED DIAGNOSTIC CONTEXT

Diagnostic code articles — Page 22.

Understand what the recorded fault means, which findings change the diagnosis, and what the cited documentation can confirm. Each article states the system or vehicle scope it covers.

Some sources leave details unresolved. Those articles include a visible source note; a code match alone does not establish applicability to your vehicle.

Jaguar AJ16 rich adaptive fuel-flow correction

Jaguar AJ16 lean air-flow adaptation and idle evidence

Jaguar AJ16 rich air-flow adaptation

Ford natural-gas fuel delivery is inferred too low

Ford natural-gas fuel delivery is inferred too high

Ford engine-oil-temperature signal intermittently fails

Ford oil-temperature input is outside engine-running self-test range

Jaguar AJ16 upstream oxygen-heater open-circuit fault

Jaguar AJ16 upstream oxygen-heater short-circuit diagnosis

Jaguar upstream heater fault with temperature-related possibilities

Jaguar upstream oxygen-heater high resistance

Jaguar upstream heater low-resistance classification

Jaguar upstream heater fault and excessive system voltage

Jaguar downstream oxygen-heater open-circuit fault

Jaguar downstream heater short and the upstream cross-reference

Jaguar downstream heater fault with inferred operating causes

Jaguar downstream heater resistance and intermittent wiring

Jaguar downstream heater classification and installation checks

Jaguar downstream heater fault and supply-voltage evidence

Jaguar V12 fuel-level signal high

Jaguar V12 low fuel-level signal versus the AJ16 definition

Jaguar AJ16 cylinder-one injector fault after shutdown

Jaguar AJ16 cylinder-two injector electrical fault

Jaguar AJ16 cylinder-three injector circuit versus fuel flow

Jaguar AJ16 cylinder-four injector shutdown monitor

Jaguar AJ16 number-five injector open or short

Jaguar AJ16 cylinder-six injector fault and companion codes

Ford 7.3L commanded and actual ICP disagree

Ford ICP remains implausibly high with the engine off

Titan engine controller is reporting a TCS-side malfunction

Titan TCS communication is missing at the engine controller

Volkswagen cylinder 1 injector short-to-positive circuit fault

Volkswagen cylinder 2 injector N31 short to positive supply

Volkswagen cylinder 3 injector short to supply versus an open circuit

Volkswagen cylinder 4 injector N33 electrical fault

Volkswagen cylinder 5 injector N83 short-to-positive diagnosis

Volkswagen cylinder 6 injector N84 short to supply

Volkswagen cylinder 7 injector N85 circuit short to positive

Volkswagen cylinder 8 injector N86 short-to-positive fault

Jaguar AJ26 pedal sensor B plausibility fault

The second accelerator-pedal signal is too low

The second accelerator-pedal signal is too high

Jaguar AJ26 throttle position error and mechanical guard mode

Jaguar mechanical-guard sensor range and mechanical causes

Jaguar mechanical-guard sensor low input

Jaguar mechanical-guard sensor high input

Ford commands the supercharger intercooler pump but detects no current

Jaguar AJ26 fuel-pump relay control fault

Ford low-speed fuel-pump relay command has an electrical fault

Ford fuel-pump feedback disappears from the controller

Ford records the non-MIL version of missing fuel-system feedback

Ford fuel-pump module reports an invalid or missing command

Ford stores a non-MIL fuel-pump command-range fault

Ford fuel-pump module detects a secondary-circuit problem

Ford records the non-MIL secondary fuel-pump circuit fault

Volkswagen cylinder 3 injector N32 open-circuit fault

Volkswagen cylinder 4 injector N33 open circuit

Volkswagen cylinder 5 injector N83 open-circuit diagnosis

Volkswagen cylinder 6 injector N84 open circuit

Volkswagen cylinder 7 injector N85 open-circuit evidence

Ford historical generator-load input is below its limit

Ford historical generator-load input is above its limit

Ford generator-load interpretation depends on the charging-system variant

Volkswagen G80 needle-lift sensor open or short to positive

Volkswagen injection-start control deviation and the N108 timing path

Ford wastegate control misses desired boost at steady state

Volkswagen low-fuel code: verify quantity before condemning the sender

Jaguar AJ26 throttle-position check after engine shutdown

Jaguar AJ26 mechanical guard during cruise operation

Jaguar AJ26 mechanical-guard check after shutdown

Volkswagen G62 coolant-temperature circuit short to ground

Volkswagen G62 coolant-temperature circuit open or short to supply

Engine overtemperature protection mode recorded

Honda VTEC command and oil-pressure feedback

Ford anti-theft control has disabled engine operation

Ford cylinder 1 injector high-to-low-side short

Ford cylinder 2 injector drive-side short

Ford cylinder 3 injector high-side to low-side short

Ford cylinder 4 injector high-to-low-side short detection

Ford cylinder 5 injector drive circuit short