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2004 Honda CRV Check Engine Light & Codes P2646, P0134

Tiny
JTURNER1973
  • MEMBER
  • 2004 HONDA CRV
  • 4 CYL
  • AWD
  • MANUAL
  • 75,000 MILES
Check Engine light came on intermitantly around a month ago and 2 weeks ago started to kick out at 3800 rpm and kick in at 3400 rpm. The codes came up as.
- P2646 Rocker arm actuator system or stuck off.
B1 Variable valve train, electronic control with single oil pressure circuit.
- P0134, B151 Oxygen sensor circuit no activity detected
- P0661 Intake manifold tuning valve control circuit low.

I checked with friends and various internet sites and most information points to Vtech solenoid and oil pressure switch as the problem.

Any advice on what the problem could be and recommended fix would certainly be appreciated.
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Wednesday, April 23rd, 2008 AT 9:49 AM

3 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
I would suggest replacing O2 sensor. It can cause sudden power loss as if you are accelerating at a flat spot.
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Monday, May 26th, 2008 AT 10:08 AM
Tiny
CAROLYN MCCRACKEN
  • MEMBER
  • 1 POST
I just got throughchanging the o2 sensor on mine. Light come back on next day. Very frustrating! After paying $385. Oo for sensor and front brake pads!
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Saturday, March 24th, 2018 AT 6:29 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
What are the present codes?
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Tuesday, March 27th, 2018 AT 1:51 AM

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