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.

B Rocker Arm Actuator Position Sensor Circuit High Bank 1

B Rocker Arm Actuator Position Sensor Circuit Intermittent/Erratic Bank 1

Variable A/C Compressor Control Circuit Range/Performance

B Rocker Arm Actuator Control Circuit/Open Bank 2

B Rocker Arm Actuator System Performance/Stuck Off Bank 2

B Rocker Arm Actuator System Stuck On Bank 2

B Rocker Arm Actuator Control Circuit Low Bank 2

B Rocker Arm Actuator Control Circuit High Bank 2

Fuel Shutoff Valve B Control Circuit/Open

Fuel Shutoff Valve B Control Circuit Low

Fuel Shutoff Valve B Control Circuit High

Fuel Mode Indicator Lamp Control Circuit

Actuator supply B open-load can be detected at shutdown

A Rocker Arm Actuator Position Sensor Circuit Bank 2

A Rocker Arm Actuator Position Sensor Circuit Range/Performance Bank 2

A Rocker Arm Actuator Position Sensor Circuit Low Bank 2

A Rocker Arm Actuator Position Sensor Circuit High Bank 2

A Rocker Arm Actuator Position Sensor Circuit Intermittent/Erratic Bank 2

A/C Refrigerant Distribution Valve A Control Circuit Driver Current/Temperature Too High

Transmission actuator supply B is low or electrically open

Supply B high is a shutdown switch test in this controller

Injection Pump Timing Offset

Injection Pump Timing Calibration Not Learned

Injection Pump Fuel Calibration Not Learned

Air Cleaner Inlet Control Circuit/Open

Air Cleaner Inlet Control Circuit Low

Air Cleaner Inlet Control Circuit High

Coolant Degassing Valve Control Circuit/Open

Coolant Degassing Valve Control Circuit Low

B Rocker Arm Actuator Position Sensor Circuit Bank 2

B Rocker Arm Actuator Position Sensor Circuit Range/Performance Bank 2

B Rocker Arm Actuator Position Sensor Circuit Low Bank 2

B Rocker Arm Actuator Position Sensor Circuit High Bank 2

B Rocker Arm Actuator Position Sensor Circuit Intermittent/Erratic Bank 2

Control Module Internal Temperature Sensor A Circuit Intermittent/Erratic

Coolant Degassing Valve Control Circuit High

Coolant bypass valve open-load detection is an electrical finding

Coolant bypass control low means a reported short to ground

Coolant bypass actuator high is a short-to-power classification

Supply C open-load is tested through HSO7 at powerdown

Supply C low can arise from voltage collapse or excess current

Supply C high is checked after HSO7 is switched off

fuel-filter heater open-circuit detection uses off-state feedback

fuel-filter heater feedback indicates the short-to-ground branch

fuel-heater feedback remains high during an on command

injector calibration data fails its programming-integrity check

High Pressure Fuel Pump Calibration Not Learned/Programmed

cylinder 1 injector adjustment data has not been programmed

cylinder 2 injector adjustment record is missing

cylinder 3 injector adjustment data is unprogrammed

cylinder 4 injector adjustment code has not been stored

cylinder 5 injector adjustment data is absent

cylinder 6 injector adjustment record has not been programmed

Cylinder-seven injector data is missing or fails validation

Cylinder-eight injector coding needs a valid individual record

Cylinder 9 Injector Data Incompatible

Cylinder 10 Injector Data Incompatible

Injector data fault recorded as repeated internal-memory write errors

Exhaust Aftertreatment Fuel Injector A Circuit/Open

Downstream injection leakage can be inferred from temperature or oxygen

Exhaust Aftertreatment Fuel Injector A Circuit Low

Exhaust Aftertreatment Fuel Injector A Circuit High

Exhaust Aftertreatment Glow Plug Control Circuit/Open

Exhaust Aftertreatment Glow Plug Control Performance

Exhaust Aftertreatment Glow Plug Control Circuit Low

Exhaust Aftertreatment Glow Plug Control Circuit High

Exhaust Aftertreatment Glow Plug Circuit/Open

Exhaust Aftertreatment Glow Plug Performance

Exhaust Aftertreatment Glow Plug Circuit Low

Exhaust Aftertreatment Glow Plug Circuit High

Ram coolant-valve performance fault: ground test before contamination repair

Engine Coolant Bypass Valve A Position Sensor Circuit

bypass-valve feedback falls into an unexpected position band

coolant-bypass valve feedback is below its electrical range

high valve feedback is not proof of a fully open bypass

Engine Coolant Bypass Valve A Position Sensor Circuit Intermittent/Erratic

a failed coolant-bypass endpoint learn needs its fault context

Engine Coolant Bypass Valve A Position Sensor Maximum Stop Performance

Early 2013 Ram coolant-bypass warning with a PCM calibration remedy

The B bypass valve controls transmission cooling in this Ford example