SLK/R170: CEL Multi faults
08-11-2017, 09:08 AM
#1
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2002 SLK 320
CEL Multi faults
2002 SLK320 with 80K miles. CEL came on and codes are P0130, P0150, P0443 and P0410. I can chase these individually, but it seems unlikely that all 4 happened simultaneously. Is there a common plug that is corroded or some other logical place to check?
08-11-2017, 02:15 PM
#2
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P0410
The Secondary Air System pumps outside fresh air into the Exhaust System during cold engine start up. This additional air helps burn up the highly rich exhaust emissions that are produced when the engine is warming up. The Secondary Air System typically has an Air Pump and some tubes or plumbing to route the air. The system also has a solenoid and Check Valve(s) to control the air flow.
P0130
P0130 is the OBD-II generic code describing an issue with the bank 1, oxygen sensor 1 (HO2S B1 S1).
It indicates that the engine computer (ECM) is not detecting proper activity from the sensor. This will cause your ECM to turn a light on and change engine management strategies which will affect fuel economy.
P0150
P0150 is the OBD-II generic code indicating the O2 sensor 1 for bank 2 fails to meet the minimum or maximum voltage limits calibrated into the Engine Control Module (ECM).
P0443
P0443 is an OBD-II generic code that the engine control module (ECM) has detected a malfunction with the purge control valve or its control circuit. This could mean an open or short in the valve or circuit.
Based on the above it looks as though 3 of the 4 are specifically related to the Engine Control Module (ECM). I would start there. It could be that one happens and that triggers the others to show a malfunction.
The Secondary Air System pumps outside fresh air into the Exhaust System during cold engine start up. This additional air helps burn up the highly rich exhaust emissions that are produced when the engine is warming up. The Secondary Air System typically has an Air Pump and some tubes or plumbing to route the air. The system also has a solenoid and Check Valve(s) to control the air flow.
P0130
P0130 is the OBD-II generic code describing an issue with the bank 1, oxygen sensor 1 (HO2S B1 S1).
It indicates that the engine computer (ECM) is not detecting proper activity from the sensor. This will cause your ECM to turn a light on and change engine management strategies which will affect fuel economy.
P0150
P0150 is the OBD-II generic code indicating the O2 sensor 1 for bank 2 fails to meet the minimum or maximum voltage limits calibrated into the Engine Control Module (ECM).
P0443
P0443 is an OBD-II generic code that the engine control module (ECM) has detected a malfunction with the purge control valve or its control circuit. This could mean an open or short in the valve or circuit.
Based on the above it looks as though 3 of the 4 are specifically related to the Engine Control Module (ECM). I would start there. It could be that one happens and that triggers the others to show a malfunction.
