Hi!,today. In this posting you will discover a description of fuses and relays Error P0320 – how to fix?
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Code definition P0320
Ignition / Distributor Engine Speed Input Circuit Malfunction.
What does the code P0320 mean
When diagnostic error code P0320 is stored by the engine control module (ECM), this is an indication that there is a fault in the ignition / distributor engine speed input circuit.
A few brief information about this system:
- The ignition / distributor engine speed sensor is designed to provide the ECM with engine speed and crank position information.
- With this information, the ECM is able to regulate the ignition timing and fuel distribution. If the ignition / distributor engine speed sensor is not functioning properly, the ECM cannot receive the signal from the ignition / distributor engine speed sensor.
- As a result, the ECM will not be able to regulate the ignition spark timing and fuel delivery, which will cause the vehicle to stop operating.
Related Diagnostic Trouble Codes:
- P0321 OBD-II Trouble Code: Ignition / Distributor / Engine Speed Input Circuit Range.
- P0322 OBD-II trouble code: No signal on the ignition / distributor engine speed input circuit
- P0323 OBD-II Error Code: Ignition / Distributor Engine Speed Input Circuit Intermittent
What causes the code P0320?
- Engine failure
- Incorrect ignition condition
- Low battery
- Faulty crankshaft position sensor
- Damaged or corroded wiring and / or crankshaft position sensor connector
- Camshaft position sensor defective
- Damaged or corroded wiring and / or camshaft position sensor connector
- Ignition / distributor engine RPM sensor defective
- Ignition / distributor engine speed sensor short circuit or corroded wiring or connector
- Bad electrical connection in the ignition / distributor engine RPM sensor circuit
- Faulty ECM
What are the symptoms of the P0320 code?
- The engine light comes on
- Vehicle is difficult to start or does not start at all.
- The vehicle may stand still
- Vehicle may die and not restart
- There may be a loss of power in the vehicle
- Often there are no symptoms.
How can a mechanic diagnose the P0320 code?
- Use an OBD-II scanner to retrieve the fault codes that have been stored by the ECM.
- Check the OBD-II Scanner Data to verify that the Ignition / Distributor Engine RPM Sensor, Crankshaft Sensor, and Camshaft Sensor are operating at the correct voltage.
- Visually inspect ignition sense / distributor sensor wiring and connectors for damage and / or corrosion.
- Visually inspect the crankshaft sensor wiring and connectors for damage and / or corrosion.
- Visually inspect the camshaft sensor wiring and connectors for damage and / or corrosion.
- Repair wiring and / or connectors as needed.
- Repair the misfire condition if the misfire code was saved by the ECM.
- Take a road test to see if the code reappears.
- If these diagnostic steps do not resolve the P0320 problem, the ECM may need to be replaced or reprogrammed. In this case, it will be necessary to follow the manufacturer’s diagnostic procedure.
The most common errors when diagnosing the P0320 code
A very common mistake made when diagnosing the P0320 code is replacing the wrong sensor. Sometimes the crankshaft position sensor is replaced when in fact the ignition / distributor engine speed sensor is the problem.
In other cases, the crankshaft is replaced when the problem is actually the camshaft sensor. Since these sensors work closely together to achieve the same thing, it is important to ensure that the correct component is replaced.
It is also important to note that ignition codes may be stored in addition to diagnostic trouble code P0320, and ignition conditions must be diagnosed and repaired in order to successfully troubleshoot the problem. Another common error is missing ignition / distributor engine speed sensor wiring and connector checks are missing.
How serious is the P0320 code?
Diagnostic trouble code P0320 is considered to be moderately severe. If a code is present and the engine light is on, but no other symptoms, the driver may not experience any driving problems that would make the vehicle unreliable.
However, if the problem is not corrected for an extended period of time, the condition will deteriorate and other engine components may be damaged.
What repairs can fix the P0320 code?
- Diagnose and repair any low-voltage battery conditions that occur.
- Replace the crankshaft position sensor.
- Replace damaged, shorted, or corroded wiring or crankshaft position sensor connector.
- Camshaft position sensor replacement
- Replace damaged, shorted, or corroded wiring or camshaft position sensor connector.
- Ignition / Distributor Engine RPM Sensor Replacement
- Replace a damaged, shorted, or corroded wiring harness or ignition / distributor engine RPM sensor connector.
- Diagnose and repair ignition fault codes that are stored in the ECM.
- Replace or reprogram the ECM as necessary.
Additional considerations for code P0320
Before replacing the ignition / distributor engine speed sensor, exclude the possibility of a malfunction of the crankshaft position sensor or the camshaft position sensor. Also, be sure to diagnose and repair any diagnostic trouble codes that have been stored by the ECM.