THE CODE DIRECTORY

Diagnostic code references — Page 95.

Browse canonical reference entries. Each definition keeps its own source and vehicle-applicability limits.

Generic OBD-II

P2AD3

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.

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

Cylinder 3 injection pulses fail the opening-feedback check

Cylinder 4 injection pulses without the expected opening signature

Cylinder 5 Injection Pulse Performance

Cylinder 6 Injection Pulse Performance

Cylinder 7 Injection Pulse Performance

Cylinder 8 Injection Pulse Performance

Cylinder 1 opening feedback fails during catalyst warm-up

Cylinder 2 pulse delivery is questioned during catalyst warm-up

Cylinder 3 injector opening is not confirmed in the warm-up sequence

Cylinder 4’s cold-start injection pulse lacks opening evidence

Cylinder 5 pulse monitoring depends on feedback being ready

Cylinder 6 cold-start pulse evidence is not a fuel-balance measurement

Cylinder 7’s missing pulse signature needs the catalyst warm-up context

Cylinder 8 cold-start pulse thresholds belong to the actual calibration

Cylinder 1 Injection Pulse Offset Not Learned

Cylinder-one injection pulse offset exceeds its learning window

Cylinder 2 Injection Pulse Offset Not Learned

Cylinder-two offset learning is an energizing-time comparison

Cylinder 3 Injection Pulse Offset Not Learned

Cylinder-three pulse adaptation can fail in either timing direction

Cylinder 4 Injection Pulse Offset Not Learned

Cylinder-four learning must be judged during the calibration function

Cylinder 5 Injection Pulse Offset Not Learned

Cylinder-five pulse-offset learning is not injector data coding

Cylinder 6 Injection Pulse Offset Not Learned

Cylinder-six calibration detects a pulse duration beyond its target allowance

Cylinder 7 Injection Pulse Offset Not Learned

Cylinder-seven pulse learning differs from its injector circuit faults

Cylinder 8 Injection Pulse Offset Not Learned

Cylinder-eight pulse offset reaches a calibration limit

Hybrid/EV Electronics Coolant Temperature Sensor B Circuit

Hybrid/EV Electronics Coolant Temperature Sensor B Circuit Range/Perfomance

Hybrid/EV Electronics Coolant Temperature Sensor B Circuit Low