Powertrain Ignition Diagnostic Trouble Codes

Complete list of Powertrain ignition DTC codes with free diagnostic guides.

Below you'll find every known DTC code for the Powertrain Ignition subsystem with step-by-step diagnostic and repair instructions. 20 guides are available — covering causes, symptoms, and repair costs. Use the table to find your specific code, or browse our full Powertrain DTC code library for other subsystems.

DTC Code Meaning Severity Time
P0300 The engine control module has detected that one or more cylinders are misfiring,... medium 30-60 minutes P0301 The engine control module sensed that cylinder 1 failed to fire at the proper ti... medium 30-60 minutes P0302 The engine control module has measured a drop in combustion pressure in cylinder... medium 30‑60 minutes P0303 The engine control module has sensed that cylinder 3 is not completing its combu... medium 30-60 minutes P0304 The engine control module has sensed that cylinder 4 is not completing its combu... medium 30-60 minutes P0305 The powertrain control module has recorded that cylinder 5 fails to complete its... medium 30‑90 minutes P0306 The engine control module has sensed that cylinder 6 is not firing correctly. Th... medium 30-60 minutes P0307 The engine control module has noticed that cylinder 7 is not completing its comb... medium 30-60 minutes P0308 The engine control module has detected that cylinder 8 is not completing its com... medium 30‑60 minutes P0325 The engine control module has detected an abnormal signal from the knock sensor ... medium 30‑60 minutes P0330 The engine control module (ECM) has detected an abnormal signal or no signal fro... medium 30-60 minutes P0335 The engine control module (ECM) has detected an abnormal signal from the cranksh... medium 30-60 minutes P0336 The engine control module sees a voltage signal from the crankshaft position sen... medium 30-60 minutes P0341 The engine control module receives a camshaft‑position signal from bank 1 that i... medium 30‑60 minutes P0345 The ECM does not receive a valid voltage signal from Camshaft Position Sensor A ... medium 30‑60 minutes P0352 The engine control module has detected a problem in the primary or secondary cir... medium 30-60 minutes P0353 The engine control module (ECM) has detected an abnormal voltage or resistance c... medium 30-60 minutes P0354 The engine control module detects an abnormal voltage or resistance in the prima... medium 30‑60 minutes SYMPTOM-ROUGH-IDLE The engine control module has detected irregular engine speed when the throttle ... medium 30‑60 minutes SYMPTOM-WONT-START The SYMPTOM-WONT-START code appears when the powertrain control module detects t... high 30-60 minutes

About Powertrain Ignition Trouble Codes

Powertrain ignition diagnostic trouble codes are triggered when the vehicle's onboard computer detects a malfunction in the ignition subsystem. These codes help you quickly identify the problem without visiting a dealership. Our guides walk you through each DTC code with step-by-step diagnostic procedures, tools needed, and when to call a professional mechanic.

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