Evora 400: P1613, U0401 - LotusTalk - The Lotus Cars Community
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post #1 of 3 (permalink) Old 12-01-2018, 01:13 PM Thread Starter
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Evora 400: P1613, U0401

Hello,

Upon startup today, I got a constant CEL and transmission MIL. Car ran smoothly and shifted normally. Went to autozone and they pulled:
  • P1613: Secondary air injection system driver
  • U0401: Invalid data received from ECM/PCM

They cleared the codes and the transmission MIL went away but CEL remained. So I purchased a better scanner (Innova 3100i) and pulled codes again myself. This time, I pulled:
  • P0174: System too lean (bank 2) - generic stored
  • P0101: Mass or Volume Air Flow Circuit Range / Performance - generic stored
  • P0700: Transmission Control System (MIL request) - generic stored
  • P0174: System too lean (bank 2) - generic permanent
  • U0401: Invalid data received from ECM/PCM - generic permanent
  • P1613: Secondary air injection system driver - generic permanent

I cleared the codes again with the new scanner, and the CEL disappeared and has not reappeared since then.

Any idea what this could be about? I did install a K&N air filter, but that was over 500 miles ago though. Car hasn't skipped a beat and runs great.

Last edited by xxaarraa; 12-02-2018 at 12:17 AM.
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post #2 of 3 (permalink) Old 12-01-2018, 02:42 PM
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Location: Hickory, NC
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Is it cold where you are? Mine blubbered on start up once and threw a check engine light because it was cold. Cleared the CEL and it never happened again. It was cylinder misfire

2011 Lotus Evora N/A Quartz Silver
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post #3 of 3 (permalink) Old 12-02-2018, 12:18 AM Thread Starter
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Quote:
Originally Posted by PLAY-DOH View Post
Is it cold where you are? Mine blubbered on start up once and threw a check engine light because it was cold. Cleared the CEL and it never happened again. It was cylinder misfire
No, Im in Texas and it was mid 60s yesterday when this happened. The "cylinder bank too lean" strikes me as possibly related to the K&N air filter install, though it happened quite a bit after the install.
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