Help with Codes

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Sep 8, 2009 | 01:03 PM

BTTM

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From: Conyers, Georgia

Help with Codes

I'm preparing to move cross country at the end of the month. My car is throwing the following codes:

P0405 - Exhaust Gas Recirculation Sensor A Circuit Low
P0140 - Sensor Circuit No Activity Detected (Bank 1 Sensor 2)
P0137 - Sensor Circuit Low Voltage (Bank 1 Sensor 1)

Can anyone point me in the right direction as to what needs to be fixed? I'm leaning towards the oxygen sensors.

Thanks in advance for your advise?

Sep 8, 2009 | 06:05 PM

joshp14

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From: WDM, Iowa

I would inspect the wiring and connections to both driver side o2 sensors. Also ck wiring and connections going to egr valve. With a test light connected to ground and ignition on, check for power at pink wire at both driver side o2 sensors. Then with test light connected to B+ c check grounds...black wires at sensors.. Inspect wiring near exhaust manifolds for possible open wires. If everything checks out, replace the sensors.