P CODE FAMILY

Powertrain code references — Page 88.

Engine, transmission and powertrain diagnostic references. Exact vehicle and module context still matters.

Generic OBD-II

P2AB2

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.

Catalyst Heater Control Module Supply Voltage

Cold Start Intake Manifold Runner Control Stuck Open Bank 1

Cold Start Intake Manifold Runner Control Stuck Open Bank 2

Cold Start Intake Manifold Runner Control Stuck Closed Bank 1

Cold Start Intake Manifold Runner Control Stuck Closed Bank 2

EcoBoost wastegate faults and the separately serviced actuator kit

The low-range wastegate position report for bank 1

Bank 1 wastegate position in the high diagnostic range

F-150 2.7L wastegate faults and a historical no-symptom case

Low-range feedback from the second wastegate channel

Bank 2 wastegate feedback reported above its accepted range

Wastegate bank 1 driver protection from current or heat

Current and temperature faults in the bank 2 wastegate driver

Intake Air O2 Sensor Reference Voltage Circuit/Open Bank 1

Intake Air O2 Sensor Reference Voltage Circuit Range/Performance Bank 1

Intake Air O2 Sensor Reference Voltage Circuit Low Bank 1

Intake Air O2 Sensor Reference Voltage Circuit High Bank 1

Intake Air O2 Sensor Reference Voltage Circuit/Open Bank 2

Intake Air O2 Sensor Reference Voltage Circuit Range/Performance Bank 2

Intake Air O2 Sensor Reference Voltage Circuit Low Bank 2

Intake Air O2 Sensor Reference Voltage Circuit High Bank 2

Charge Air Cooler Coolant Temperature Sensor B Circuit

Charge Air Cooler Coolant Temperature Sensor B Circuit Range/Performance

Charge Air Cooler Coolant Temperature Sensor B Circuit Low

Charge Air Cooler Coolant Temperature Sensor B Circuit High

Charge Air Cooler Coolant Temperature Sensor B Intermittent/Erratic

Reductant Temperature Sensor B Circuit

Reductant Temperature Sensor B Circuit Range/Performance

Reductant Temperature Sensor B Circuit Low

Reductant Temperature Sensor B Circuit High

Reductant Temperature Sensor B Circuit Intermittent

Throttle/Pedal Position Sensor/Switch C/G Voltage Correlation

Throttle/Pedal Position Sensor/Switch B/G Voltage Correlation

Throttle/Pedal Position Sensor/Switch A/G Voltage Correlation

Intermediate System Voltage Low

Intermediate System Voltage High

Reductant Pump Motor Position Sensor Circuit

Reductant Pump Motor Position Sensor Circuit Range/Performance

Reductant Pump Motor Position Sensor Circuit Low

Reductant Pump Motor Position Sensor Circuit High

cold-soak comparison of reductant tank temperatures

a smart reductant temperature sensor reports an out-of-range low value

A high temperature report from the smart reductant tank sensor

Erratic reductant temperature measured over a moving window

Reductant Tank Temperature Sensor B Circuit

Intake Air System Leak Bank 2

Intake Air O2 Sensor Pumping Current Trim Circuit Open Bank 1

Intake Air O2 Sensor Pumping Current Trim Circuit Low Bank 1

Intake Air O2 Sensor Pumping Current Trim Circuit High Bank 1

Intake Air O2 Sensor Pumping Current Circuit Open Bank 1

Intake Air O2 Sensor Pumping Current Circuit Low Bank 1

Intake Air O2 Sensor Pumping Current Circuit High Bank 1

Intake Air O2 Sensor Negative Current Control Circuit Open Bank 1

Intake Air O2 Sensor Negative Current Control Circuit Low Bank 1

Intake Air O2 Sensor Negative Current Control Circuit High Bank 1

Intake Air O2 Sensor Pumping Current Trim Circuit Open Bank 2

Intake Air O2 Sensor Pumping Current Trim Circuit Low Bank 2

Intake Air O2 Sensor Pumping Current Trim Circuit High Bank 2

Intake Air O2 Sensor Pumping Current Circuit Open Bank 2

Intake Air O2 Sensor Pumping Current Circuit Low Bank 2

Intake Air O2 Sensor Pumping Current Circuit High Bank 2

Intake Air O2 Sensor Negative Current Control Circuit Open Bank 2

Intake Air O2 Sensor Negative Current Control Circuit Low Bank 2

Intake Air O2 Sensor Negative Current Control Circuit High Bank 2

Starter Relay C Control Circuit/Open

Starter Relay C Control Circuit Low

Starter Relay C Control Circuit High

Compass relay diagnosis when the auxiliary battery is depleted

Wagoneer starter-relay indication from an unseated connector

Starter Relay D Control Circuit/Open

Starter Relay D Control Circuit Low

Starter Relay D Control Circuit High

Starter Relay D Stuck On

Starter Relay D Stuck Off

Engine Coolant Temperature Sensor 4 Circuit

Engine Coolant Temperature Sensor 4 Circuit Range/Performance

Engine Coolant Temperature Sensor 4 Circuit Low

Engine Coolant Temperature Sensor 4 Circuit High

Cylinder 1 injection pulse lacks the expected opening signature

Cylinder 2 injector movement is not confirmed for a commanded pulse