These are code references, not a list of confirmed faults on every vehicle. Read the source and applicability notes, then match the exact vehicle, year, engine and scan report.

P/N Position Transaxle Range Switch Circuit Fault

Ford output-shaft-speed signal is irregular or interrupted

Turbine Speed Sensor Circuit Intermittent

Turbine Shaft Speed (TSS) Circuit Intermittent Malfunction

Torque Converter Clutch Circuit Intermittent

Kickdown Solenoid Relay Control Circuit

Kickdown Solenoid Circuit Low Voltage

Kickdown Solenoid Circuit High Voltage

Early Cummins NOx-efficiency fault with soot-fouled oxygen sensors

NOx Adsorber Efficiency Below Threshold Bank 2

DPF efficiency is judged from filtered soot-sensor evidence

Particulate Filter Efficiency Below Threshold Bank 2

Bank 1 intake runners do not match the commanded closed state

A bank 2 stuck-open runner result needs its own command and feedback

swirl flaps fail to return after actuator shutdown

Bank 2 intake runners remain closed when the monitored command requires otherwise

swirl-motor open-circuit detection occurs with the driver off

swirl-motor circuit low is identified by H-bridge overcurrent

key-off swirl-flap learning and response checks

Audi's runner-overtravel monitor uses a signal-voltage boundary

two downstream DPF overtemperature thresholds

Particulate Filter Over Temperature Bank 2

close-coupled oxidation-catalyst overtemperature evidence

Catalyst System Over Temperature Bank 2

swirl-motor high circuit uses hardware short-to-power information

Bank 2 intake runner control-circuit status is separate from plate movement

Intake Manifold Runner Control Circuit Low Bank 2

Intake Manifold Runner Control Circuit High Bank 2

the CAED runner-position circuit has a high-signal criterion

Bank 1 runner position can exceed its expected operating range

low SENT swirl-position value with communication still valid

high swirl-position signal is separate from a motor high fault

Intake Manifold Runner Position Sensor/Switch Circuit Intermittent Bank 1

Intake Manifold Runner Position Sensor/Switch Circuit Bank 2

Reductant Injection Valve Circuit Range/Performance Bank 2 Unit 1

swirl-motor supply is low despite a valid relay supply

Intake Manifold Runner Control Actuator Supply Voltage Low Bank 2

Intake Manifold Runner Control Actuator Internal Performance Bank 1

Intake Manifold Runner Control Actuator Internal Performance Bank 2

Reductant Pump A Stuck On

Bank 2 runner over-travel requires valid position feedback

A low bank 2 runner position signal is not proof the runners are closed

Bank 2 runner feedback is electrically high before position can be trusted

Intake Manifold Runner Position Sensor/Switch Circuit Intermittent Bank 2

the CAED EVAP temperature circuit is evaluated in a defined voltage band

EVAP temperature performance includes communication and module checks

low EVAP temperature-circuit voltage is not a cold-vapor diagnosis

the high-voltage label is paired with a current criterion in Audi's chart

EVAP Fuel Vapor Temperature Sensor Circuit Intermittent

Fuel Fired Heater Disabled

reductant tank-heater openness is evaluated when heating starts

Reductant Tank Heater Control Circuit Low

Reductant Tank Heater Control Circuit High

Reductant Leakage

Ram reductant-injector performance and DCU compatibility

Reductant/Regeneration Supply Control Circuit Range/Performance

Fuel Fired Heater Performance

Ford exhaust-temperature sensor 2 disagrees with its model

EGT sensor 2 low-range diagnosis depends on sensor type

EGT sensor 2 high-range fault needs sensor-type confirmation

Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 2

Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 2

Exhaust Gas Temperature Sensor Circuit High Bank 2 Sensor 2

Reductant Injection Air Pressure Sensor A Circuit

Reductant Injection Air Pressure Sensor A Circuit Range/Performance

Reductant Injection Air Pressure Sensor A Circuit Low

Ford DEF level-sensor open-load circuit fault

When the DEF level sensor cannot provide a trustworthy measurement

reductant level low-circuit code comes from smart-sensor status

Why a DEF level circuit-high label can mean an excessive reported height

Ram DEF-level errors during uneven thawing

Ford calculates insufficient remaining DEF range

Reductant Injection Air Pressure Sensor A Circuit High

Reductant Injection Air Pressure Sensor A Circuit Intermittent

Reductant Temperature Sensor A Circuit

Ford DEF tank temperature fails a cold-start comparison

Reductant Temperature Sensor A Circuit Low

Reductant Temperature Sensor A Circuit High

Reductant Temperature Sensor A Circuit Intermittent

DEF dosing valve 1 open-circuit status