C3491 Acura Auto Trouble Code
Parts or components should not be replaced with reference to only a C3491 Acura DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.
The problem is caused by the variable cylinder management system switching on and off during light throttle conditions, at cruising speeds, or when driving on flat roads. The constant switching causes excessive oil consumption and the trouble codes appear when oil pressure drops to the point where it can no longer operate the VCM system.
C3491 Acura Possible Solution:
Air Conditioning Pressure Sensor (ACP) Insufficient Pressure Change Each time the A/C clutch engages, the PCM is looking for a pressure change in the refrigerant. If the change in pressure is outside of the calibration the DTC will set. A/C system mechanical failure Open ACP or VREF circuit A/C sensor damaged A/C system electrical failure A/C clutch always engaged Verify A/C system function, including refrigerant charge.
C3491 Acura Description For All Models :
- Acura Arta
- Acura Cl
- Acura Csx
- Acura El
- Acura Integra
- Acura Legend
- Acura Loctite
- Acura Mdx
- Acura Mdx Ii
- Acura Mdx Iii
- Acura Nsx
- Acura Rdx
- Acura Rl
- Acura Rsx
- Acura Slx
- Acura Tl
- Acura Tl Iii
- Acura Tl Iv
- Acura Tlx
- Acura Tsx
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C3491 Acura Trouble Repair :
C3491 Acura code shows that location the body harness connector, located in and around the left hand kick panel area or inside the IP (consult a shop manual for location). Water can leak into the connector from clogged sunroof drains, A-pillar leaks, or windshield or cowling leaks. |
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