P CODE FAMILY

Powertrain code references — Page 46.

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

Geo

P1300

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.

Ignition Coil 1 Primary Feedback Circuit

Random Misfire

Lexus RX300 ignition confirmation missing for coil 1

Ignition Timing Adjustment Circuit

Igniter Circuit Malfunction No 1

Misfire Detected Fuel Level Too Low

Boost Calibration High

Cylinder 1 Misfire

Subaru exhaust-temperature warning linked to misfire

Boost Calibration Low

Cylinder 2 Misfire

EGR Calibration Fault

Cylinder 3 Misfire

EGR Calibration High

Cylinder 4 Misfire

Ignition Coil 2 Primary Feedback Circuit

EGR Calibration Low

Cylinder 5 Misfire

Lexus RX300 coil 2 igniter circuit fault

Igniter Circuit Malfunction No 2

Kickdown Relay Pull In Circuit Fault

Honda cylinder-six misfire: follow the fault before choosing a part

Kickdown Relay Hold Circuit Fault

Chassis Acceleration Sensor Signal Malfunction

A/C Clutch Circuit Fault

Chassis Acceleration Sensor Signal Low

Ford’s misfire monitor is disabled by missing or unsuitable input

Chassis Acceleration Sensor Signal High

Misfire Detection Monitor

Ignition Coil 3 Primary Feedback Circuit

Lexus RX300 coil 3 command and feedback fault

Injection Pump Timing Actuator Circuit

Subaru exhaust-temperature circuit malfunction

A Camshaft Position Plausibility

Jaguar AJ16 catalyst-risk misfire in cylinders one through three

Jaguar AJ16 catalyst-risk misfire in cylinders four through six

Ignition Coil 4 Primary Feedback Circuit

Jaguar persistent misfire with an injector switched off

Igniter Circuit Malfunction No 4

Ford PCM reports stored injector-driver-module faults

Spark Plug Voltage Detection Circuit Malfunction Front Bank

Misfire Rate Exceeds Emissions

B Camshaft Position Plausibility

Injector Circuit IDM Codes Not Updated

Honda spark-voltage detection: the RL right-bank circuit

Honda detection-module reset fault: RL left-bank checks

Injection Timing Piston Position Sensor Circuit

Honda right-bank reset fault: distinguish reset and signal circuits

Injection Timing Piston Position Sensor Circuit Range Performance

Knock Sensor 1 Circuit Short To Ground

IC Module 4X Ref Circuit Intermittent No Pulses

Igniter Circuit Malfunction No 5

Maxima ignition-signal diagnosis starts with companion sensor codes

Knock Sensor 2 Circuit Short To Ground

Electronic Ignition System Fault Line

W8 knock sensor 3 has a low signal

EI System Or Ignition Control Missing

W8 knock sensor 3 reports high input

No 24X reference pulses despite camshaft activity

Knock Sensor 4 Circuit Low Input

Crank RPM Too Low

Knock Sensor Power Source Circuit Low Voltage

W8 knock sensor 4 has an excessive signal

Lexus RX300 coil 6 ignition-confirmation fault

Knock Sensor Circuit Low Input

Cylinder 1 Knock Control Limit Attained

Cylinder 2 knock control reaches its limit

Knock sensor 2 reports too little engine noise

Cylinder 3 Knock Control Limit Attained

Knock sensor 2 exceeds its signal limit

Cylinder 4 Knock Control Limit Attained

Cylinder 5 knock-control correction reaches its limit

Igniter Circuit Malfunction No 7

Cylinder 6 knock control reaches its limit

Cylinder 7 Knock Control Limit Attained

Knock sensor 4 has insufficient signal

Cylinder 8 Knock Control Limit Attained

Knock sensor 4 reports high input

CKP Circuit

Crankshaft Position Sensor Circuit