DOCUMENTED DIAGNOSTIC CONTEXT

Diagnostic code articles — Page 38.

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.

Cylinder-2 valve-control output stays high during activation

Cylinder-3 deactivation circuit open-path check

Cylinder-3 control circuit fails its off-state low check

Cylinder-3 deactivation control circuit high

Cylinder-4 deactivation circuit loses continuity

Cylinder-4 deactivation output is pulled to ground

Cylinder-4 deactivation driver reports a supply-side short

Cylinder-5 deactivation control has an open-path fault

Cylinder-5 valve-control circuit is pulled low

Cylinder-5 valve-control output resists the on command

Cylinder-6 deactivation output has an open-path indication

Ram cylinder-six deactivation and optional MDS software

Cylinder-6 deactivation circuit fails the low-state check

Cylinder-6 deactivation control is held toward power

Cylinder-7 deactivation control circuit appears open

Cylinder-7 deactivation output remains grounded

Cylinder-7 deactivation control short toward supply

Cylinder-8 valve-control circuit loses its electrical path

Cylinder-8 deactivation control remains low after release

Cylinder-8 deactivation output stays high when driven

Cylinder 1 may fail to return from deactivation

Cylinder-2 deactivation permits unwanted air pumping

Cylinder-3 half-engine operation fails its airflow performance check

Cylinder 4 valve-performance fault after deactivation ends

Cylinder-5 deactivation does not produce the expected air behavior

Cylinder-8 deactivation performance leaves an air-pumping error

The transmission controller reports a CAN bus-off state

Ford ECM transmit CAN buffer remains overloaded

Transit camera-module code after BCM replacement programming

ProMaster CAN-B faults and the BCM configuration step

GM truck communication faults during electrical-load events

a global bus timeout is broader than one missing message

Mustang GTD suspension warnings and VDM software

the ECM detects repeated Bus A off events

Bus B off events require channel-specific interpretation

CAN 1 bus-off detected by the EOCM3 receiver

GM identifies a powertrain sensor CAN bus-off fault

CAN bus fault and the adaptive-cruise fallback in this module

CAN 9 bus-off counted over a sliding sample window

Mazda maps the bus-G code to CAN bus No.7

Bus H has entered the CAN bus-off state

A ten-second bus-off finding on Mazda's CAN No.4

A Mazda bus fault on the diagnostic-connector path

front-camera CAN 8 bus-off and its downstream effects

FlexRay bus-off state in the object-control network

TBM2.0H Ethernet startup delay and stored faults

the brake controller misses expected engine messages

TCM message deadlines differ within one ECM monitor

Transfer-case message timeout after CAN communication is enabled

gear-shift module response missing on LIN bus 2

cruise-control messages stop reaching the ECM

Engine and glow-plug controllers lose expected messages

A fuel-pump communication code may use duty-cycle limits

Turbo-control communication uses separate message timeouts

reductant control module CAN messages exceed their timeouts

The A/C module timeout is separate from a short reply failure

Mazda PHEV no-READY condition with luggage-compartment corrosion

Cherokee hybrid battery communication and coordinated software

The local PCM link that limits Mazda transmission functions

How Mazda times a lost starter-generator message

the TCM loses ABS-controller messages

A brake-controller communication fault can stop headlamp leveling

missing inertial data rather than a generic transmission timeout

Steering-angle module message is missing at the receiver

A TPMS communication code stored by the restraint module

The restraint module can lose parking-brake messages

the ECM misses brake-system control messages

Chassis-control module A messages stop arriving

A missing generator response on the documented LIN channel

a steering-controller message exceeds its deadline

Missing or undersized suspension messages at the brake controller

brake controller did not receive a usable rear-steer status message

Ram trailer-brake communication behind a park-assist warning

Ford AWD controller missing all-terrain module messages

suspension-module messages have two different timeout windows

body-controller messages have several timeout windows

the brake controller loses the gateway status message

restraint-module messages missing at different rates

restraint controller times out waiting for occupant status

cluster communication faults can include a configuration question