A code P0102 may mean that one or more of the following has happened:
- The MAF may be disconnected, or a wiring connection may be bad
- The MAF may be dirty or otherwise contaminated (Note: if you use a reusable oiled air filter, be careful not to apply too much oil or that can contaminate the MAF).
- The MAF sensor
may be faulty
Common Problems that Trigger the P0303:
Worn out Spark Plugs Ignition Wires, Coil(s), Distributor Cap and Rotor (when applicable)
Incorrect Ignition Timing
Vacuum Leak(s)
Low or Weak Fuel Pressure
Improperly functioning EGR System
Defective Mass Air Flow Sensor
Defective Crankshaft and/or Camshaft Sensor
Defective Throttle Position Sensor
Mechanical Engine Problems i.e Low Compression, Leaking Head Gasket(s) or Valve Problems
P0440 EVAP System
P0440 is defined as EVAP system incorrect purge flow. A problem anywhere in the EVAP system can cause an "incorrect purge flow". This simply means that the computer has detected that the fuel vapors are not flowing the way they should.
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