Ecu Code 13 and 33 Need Advice
I recently took my car to the car wash and gave the engine bay a vigorous washing. When I got back home my check engine light is on and when I checked the codes, these were on:
13 - Pressure Sensor (intake manifold pressure), and the 33 - Solenoid, Port Air Valve lights on. I disconnected and the reconnected the plugs and vacuum lines on both and then cleared the ecu by disconnecting the battery for 30 seconds. Light still came back on. Car doesn't feel weird, but I don't like lights on my dash. I did some digging and from what I can tell is that the code 33 is from the acv valve and is related to emissions. You cant buy a new one anymore (according to mazdatrix) and I still have all the emissions junk on my s5 because they run the ports. Any thoughts on my next step? Thanks in advance. |
have you checked the connectors at those parts..for moisture from your "vigorous washing"?
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Originally Posted by misterstyx69
(Post 11759515)
have you checked the connectors at those parts..for moisture from your "vigorous washing"?
From what I have read, one problem might cause a number of codes to go off. Any Other ideas on whats up? |
At the Boost Sensor there are three wires. W/the vacuum hose disconnected the Green/Yellow wire should read 2.2 to 2.5 volts w/key to on. The Brown/White wire reads 4.5 to 5.5 volts w/key to on. The Brown/Black wire is a ground and should read 0 volts w/key to on.
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Originally Posted by satch
(Post 11761424)
At the Boost Sensor there are three wires. W/the vacuum hose disconnected the Green/Yellow wire should read 2.2 to 2.5 volts w/key to on. The Brown/White wire reads 4.5 to 5.5 volts w/key to on. The Brown/Black wire is a ground and should read 0 volts w/key to on.
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Yes, and the FSM.
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I finally got around to testing the boost sensor and I'm getting ok readings on all of them except the green wire. That one is reading 4.8 volts instead of 2.2-2.5. So I assume time for a new map sensor.
Thanks for your help! |
It would appear so but make sure the ground wire is behaving as a ground. You can back stab the ground wire in the plug w/another wire and run it to the negative battery terminal and recheck the voltage values at the sensor and if the Green/Yellow still gives you the same reading then it needs to be replaced. If the ground wire in the sensor was not grounding then the voltage off of the vref wire could bleed through to the wire you measured as being inaccurate thus giving you a false reading.
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Originally Posted by satch
(Post 11765593)
It would appear so but make sure the ground wire is behaving as a ground. You can back stab the ground wire in the plug w/another wire and run it to the negative battery terminal and recheck the voltage values at the sensor and if the Green/Yellow still gives you the same reading then it needs to be replaced. If the ground wire in the sensor was not grounding then the voltage off of the vref wire could bleed through to the wire you measured as being inaccurate thus giving you a false reading.
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