Codes P0420, P0128, C0042 and C0057, also, traction and check engine lights on?

Tiny
BHAMDOC1973
  • MEMBER
  • 2011 SUBARU LEGACY
  • 4 CYL
  • TURBO
  • 4WD
  • AUTOMATIC
  • 282,000 MILES
P0420, p0128, c0042, c0057, and traction and check engine lights on?
Sunday, October 23rd, 2022 AT 2:59 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,840 POSTS
P0420 code signals a low catalyst system efficiency. So, it needs a new catalytic converter.

P0128 indicates that your engine coolant temperature is below the thermostat regulating temperature. Replace the thermostat.

C0042 The ABS Module sets the OBDII code when the Power Supply Voltage is not to factory. Replace the ABS module.

C0057 which can be related to the bad ABS control module so I would fix that first.

Please let us know what happens.
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Monday, October 24th, 2022 AT 9:42 AM

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