DOCUMENTED DIAGNOSTIC CONTEXT

Diagnostic code articles — Page 20.

Understand what the recorded fault means, which findings change the diagnosis, and what the cited documentation can confirm. Each article states the system or vehicle scope it covers.

Some sources leave details unresolved. Those articles include a visible source note; a code match alone does not establish applicability to your vehicle.

Sensor P circuit high converts to a cold endpoint

Sensor P temperature signal is unstable

Outlet coolant temperature must disagree with both references

Outlet circuit low needs the correct sensor identity

Outlet circuit high can show a temperature below −40°C

Coolant-valve drive 1 low is tested in reverse motion

Valve drive 1 high is evaluated in a different motion state

Coolant valve has not reached its commanded position

Valve-position feedback low uses a reference percentage

Valve-feedback high is not a coolant-flow percentage

Electronics coolant-pump control line has a recorded circuit fault

Electronics pump performance depends on operating mode and temperature

Electronics coolant-pump control reads high

Electronics coolant-pump enable circuit is open

Electronics coolant temperature must agree with charger temperature

Electronics coolant-sensor low is an electrical boundary

Electronics coolant-sensor high uses its reference voltage

Electronics coolant temperature changes erratically

Control-pilot integrity uses internal states as well as signal level

Control pilot low during GM’s disconnected-cord test

High control-pilot percentage with no charge cord connected

Charging-switch pilot voltage outside its test window

Ventilation-switch pilot test after charging-switch checks

Charger voltage stays low during charger precharge

Positive charging-contactor driver command mismatch

Negative charging-contactor control circuit and its blind spot

Charging interlock low while its reference is sourced

Charging interlock high in two different source states

Grand Cherokee 4xe charger-output fault with an IDCM software path

Charger output current deviation or unavailable output

Unexpected charger-bus current during precharge

Charger precharge fails to reach and hold its voltage window

Wrangler charging-input voltage and coordinated IDCM software

Excessive AC charging current depends on input voltage

Control-pilot indicator driver tested in on and off states

Charge-status LED circuit fault across connected and disconnected states

Early Mustang Mach-E no-start after charging and remote start

AC input-current sensor zero-offset rationality

Charger input-current sensor reports below its valid threshold

charger input current above the documented limit

charger AC voltage fails a two-reference comparison

low charger AC peak voltage with a long observation window

high charger AC peak voltage is a fast circuit check

low-voltage charger output disagrees with vehicle references

charger low-voltage output measurement falls below range

high low-voltage charger output has its own trip classification

low charger output current is a sensor-range finding

high charger low-voltage output current requires context

Charger output voltage disagrees with battery voltage

very low high-voltage charger output is a reported sensor condition

high charger battery-output voltage is not a battery-capacity test

low high-voltage charger output current needs the correct channel

high battery-output current is separate from input overcurrent

proximity-signal low is checked in a specific driving state

high proximity voltage requires valid speed and shift information

low-voltage charger power fails an input-to-output plausibility check

high-voltage charger power is checked against input evidence

charger discharge failure has two reporting paths

Battery cooling-fan enable circuit is open while off

Battery fan enable voltage stays low when enabled

Battery cooling-fan enable stays high when off

compressor voltage disagrees with its battery reference

high compressor voltage includes a recovery-state requirement

low compressor voltage is evaluated after contactor closure

compressor DC-link overcurrent is checked during a run request

compressor CPU temperature is compared after a long off period

a high temperature-sensor circuit can report extreme cold

circuit-low diagnosis is based on an extreme CPU temperature report

compressor driver temperature is checked against ambient and intake air

driver-temperature circuit-high has an unresolved boundary in this table

driver-temperature circuit-low does not establish actual overheating

compressor phase-U current needs a polarity-aware interpretation

phase-U current-high is not a DC-link overcurrent diagnosis

phase-V current-low belongs to the stopped-compressor check

phase-V current-high requires its own signal convention

phase-W current-low must remain a phase-specific finding

phase-W current-high is distinct from total compressor load

charging isolation uses measurement history and a state-dependent limit

Wrangler cell-balancing performance and the recall prerequisite

Cell balancing remains active when it was not requested