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Khadija
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Join date: Nov 5, 2025
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Oct 11, 2026 ∙ 6 min
P0323 Code: Causes, Symptoms, Diagnosis & How to Fix It
P0323 means “Ignition/Distributor Engine Speed Input Circuit Intermittent.” It is a generic OBD2 powertrain trouble code indicating that the PCM has detected an intermittent problem with the engine-speed input signal. The engine-speed signal is important because the PCM uses it to determine engine RPM and crankshaft position. Depending on the vehicle, the signal may come from a crankshaft position sensor, camshaft position sensor, distributor pickup, ignition reference circuit, or another...
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Oct 11, 2026 ∙ 6 min
P0322 Code: Causes, Symptoms, Diagnosis & How to Fix It
P0322 means “Ignition/Distributor Engine Speed Input Circuit Low.” It is a generic OBD2 powertrain trouble code indicating that the PCM has detected an engine-speed input signal that is lower than the expected level. The engine-speed signal may come from a crankshaft position sensor (CKP), camshaft position sensor (CMP), distributor pickup, or another ignition/engine-speed input system, depending on the vehicle. The PCM relies on this information to determine engine speed and position for...
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Oct 11, 2026 ∙ 7 min
P0321 Code: Causes, Symptoms, Diagnosis & How to Fix It
P0321 means “Ignition/Distributor Engine Speed Input Circuit Range/Performance.” It is a generic OBD2 powertrain trouble code indicating that the PCM or ECM has detected an engine-speed input signal that is not performing within its expected range. The engine-speed signal is important because the control module uses it to determine engine RPM and crankshaft position. Depending on the vehicle, this information may come from a crankshaft position sensor (CKP), camshaft position sensor (CMP),...
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