P0321

Ignition/Distributor Engine Speed Input Circuit Range/Performance

DTC P0321, sometimes indicated as P032100 is an OBD diagnostic trouble code indicating a generic fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the ignition system causing ignition/distributor engine speed input circuit range/performance.

The ignition/distributor engine speed input circuit range/performance may be caused by a problem with the ignition system or the distributor. Other possible causes include a bad crankshaft position sensor or a problem with the engine control module.
If the problem is with the ignition system, the most likely cause is a bad ignition coil. If the problem is with the distributor, the most likely cause is a bad distributor cap or rotor.
The best way to diagnose this problem is to check the ignition system for spark and the distributor for proper timing. If there is no spark or the timing is off, then the problem is most likely the ignition system or the distributor. If there is spark and the timing is correct, then the problem is most likely a bad crankshaft position sensor or a problem with the engine control module.

  • P0321: Ignition/Distributor Engine Speed Input Circuit Range/Performance
  • P0321: Ignition/Dist Engine Speed Input CKT Range/Performance
  • P0321: Crankshaft position (CKP) sensor/engine speed (RPM) sensor – range/performance problem
  • P0321 00: Engine speed sensor output circuit - ignition distributor
  • P0321 00: Crankshaft position (CKP) sensor/engine speed (RPM) sensor - range/performance problem

DTC Trouble Code Search
Bulletins

Bulletins are notices put out by manufacturers in conjunction with the NHTSA to notify the public of manufacturing issues or changes.

  • A0123032072326_1 - EQUIPMENT:ELECTRICAL:ENGINE BLOCK HEATER
    AUDI: This bulletin provides information for when the engine starts poorly, emission warning lamp is illuminated - engine speed sensor g28, P0321.
  • 122-R7X8Y-09 - ELECTRICAL SYSTEM
    PORSCHE: Customer concern customer complains of vehicle stalling and/or check engine light illuminated (dme fault code ?P032200 engine speed sender - no signal? Or ?P032100 - engine speed sensor, implausible signal? May be stored). Technical backg
  • TSB-28-09-05 - ENGINE AND ENGINE COOLING:ENGINE
    AUDI: Audi: mil on, engine speed sensor spacer not required (dtc P0300, P0335, P0336, P0321, P0322). Multiple misfires detected on one or more cylinders; malfunction indicator light (mil) may be on or flashing. *pe
  • 28 08 04 - ENGINE AND ENGINE COOLING:ENGINE
    AUDI: Mil on, engine speed sensor spacer not required (dtc P0300, P0335, P0336, P0321, P0322). *nj
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