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Master
3,301 Answers
- Posted on May 25, 2011
Re: I have 3 codes po431 po103 and po113
P0103 Mass or Volume Air Flow Circuit High Input
P0113 Intake Air Temperature Circuit High Input
P0431 Warm Up Catalyst Efficiency Below Threshold (Bank 2)
A code P0431 may mean that one or more of the following has happened:
- The catalytic converter is no longer functioning properly
- An oxygen sensor is not reading (functioning) properly
- There is an exhaust leak
A code P0113 may mean that one or more of the following has happened:
- Internally failed IAT sensor
- Faulty connection at IAT sensor
- Open in IAT ground circuit or signal circuit
- Short to voltage in IAT signal circuit or reference circuit
- IAT harness and/or wiring routed too close to high-voltage wiring (e.g. alternator, spark plug
cables, etc.)
- Faulty PCM (less likely but not impossible)
A code P0103 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 sensor may be damaged
- The vehicle computer may be faulty (very rare)
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