MANUFACTURER REFERENCE

Generic OBD-II code references — Page 47.

Read the source definition and confirm the exact vehicle, reporting module and diagnostic procedure.

Generic OBD-II

P20E5

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.

Exhaust Gas Temperature Sensor 1/2 Correlation Bank 2

Reductant Injection Air Pressure Too Low

Reductant Injection Air Pressure Too High

When DEF pressure fails to follow the commanded setpoint

reductant pressure exceeds its current target

Reductant Control Module Power Relay De-Energized Performance - Too Early

Reductant Control Module Power Relay De-Energized Performance - Too Late

SCR NOx Catalyst - Over Temperature Bank 1

SCR NOx Pre-Catalyst - Over Temperature Bank 1

SCR efficiency is a filtered model-based judgment

SCR NOx Pre- Catalyst Efficiency Below Threshold Bank 1

SCR NOx Catalyst - Over Temperature Bank 2

SCR NOx Pre-Catalyst - Over Temperature Bank 2

SCR NOx Catalyst Efficiency Below Threshold Bank 2

SCR NOx Pre- Catalyst Efficiency Below Threshold Bank 2

Reductant Consumption Too Low

Reductant Consumption Too High

Reductant Injection Valve Stuck Open Bank 1 Unit 1

Reductant Injection Valve Stuck Open Bank 2 Unit 1

swirl-flap position does not track a settled command

Intake Manifold Runner Control Circuit Performance Bank 2

Reductant Pump B Control Circuit/Open

Reductant Pump B Control Performance/Stuck Off

Reductant Pump B Control Circuit Low

Reductant Pump B Control Circuit High

first DEF injector needs excessive delivery compensation

reductant-controller performance includes memory and calibration checks

Why a throttle motor circuit-open code can include driver overheating

Throttle position differs from its modeled response

throttle motor driver reports a short-to-ground condition

throttle driver short-to-power differs from a position error

Mazda diesel idle-control diagnosis includes boost and vacuum faults

throttle shutdown-path monitoring refers to the previous cycle

limited power is a throttle-system response, not a single-part diagnosis

Throttle processor communication is distinct from a plate stuck in position

throttle module performance covers internal integrity tests

Learned throttle minimum position outside the permitted window

The bank 2 throttle circuit code has separate open-load and thermal paths

Throttle tracking error with a tolerance that changes as the command moves

Throttle Actuator B Control Motor Circuit Low

Throttle Actuator B Control Motor Circuit High

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

Throttle Actuator B Control System - Forced Limited RPM

Ram forced RPM limitation with throttle icing

A stuck-open throttle result is a command-response diagnosis

A stuck-closed throttle code needs the original control context

Throttle/Pedal Position Sensor B Minimum Stop Performance

Throttle/Pedal Position Sensor C Minimum Stop Performance

Throttle/Pedal Position Sensor D Minimum Stop Performance

Throttle/Pedal Position Sensor E Minimum Stop Performance

Throttle/Pedal Position Sensor F Minimum Stop Performance

Throttle motor current performance is different from plate position error

Throttle does not return to its de-energized default position

Identify throttle B before interpreting a stuck-open report

A stuck-closed throttle B result is a control-state finding

Motor-current performance is different from throttle position error

The bank 2 throttle spring check examines several return behaviors

Throttle Actuator B Control Module Processor

Throttle Actuator B Control Module Performance

APP1 disagrees across primary and secondary processor evaluations

pedal channel one has a separate rationality classification

Accelerator pedal sensor 1 signal below its allowed range

Accelerator pedal sensor 1 signal exceeds the reference-scale limit

F-150 intermittent pedal faults and harness routing at the booster

APP2 is out of range on the secondary processor only

pedal channel two has an unresolved range classification

Accelerator pedal sensor 2 has a low or open signal

Accelerator pedal sensor 2 exceeds its electrical upper limit

Throttle/Pedal Position Sensor/Switch E Circuit Intermittent

Throttle Position Sensor/Switch G Circuit

When throttle-position information disagrees with the airflow model

The low-voltage limit for the second bank 2 throttle-position channel

A high signal on throttle-position sensor 2 at bank 2

Throttle Position Sensor/Switch G Circuit Intermittent

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

Throttle/Pedal Position Sensor/Switch F Circuit

Throttle/Pedal Position Sensor/Switch F Circuit Range/Performance

Ford 6.0L pedal sensor F circuit voltage is low

the VAG high-signal fault can involve oxygen-sensor damage

Throttle/Pedal Position Sensor/Switch F Circuit Intermittent