Anyone have any experience with P2001 trouble code?

 

EDIT*

The P2001 code was from my old Innova reader.

I took my newest reader out there and got P2A01 code so, I'm gonna trust the new one and my old one won't give me a correct code on newer vehicles.

 

Sorry, but OBDII is a standard, so this makes not alot of sense as I believe all the pins used for diff OBDII communications protocls differ (except batt V and gnd).

Does the vehicle use the GM version of CANbus or one of the widely used protocols that came before? Don't remember what year CANbus became a requirement. Search CANbus on the net and you can identify it by which diag port pins are present and which are not.

Never heard of a P2001 and it's a bank 2 emissions related code, so unless you have the rare v6 Ion, I'd say that was bogus.
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P2A01 HO2S Circuit Closed Loop (CL) Performance Bank 1 Sensor 2 (PCM)

That would refer to the rear O2 sensor after the Catcon.

this was extracted from a posting for a 2007 ion but I can't imagine it changed along the way...
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DTC P2A01
Circuit Description:

Heated oxygen sensors (HO2S) are used for fuel control and post catalyst monitoring. Each HO2S compares the oxygen content of the surrounding air with the oxygen content in the exhaust stream. The HO2S must reach operating temperature to provide an accurate voltage signal. Heating elements inside the HO2S minimize the time required for the sensors to reach operating temperature. The powertrain control module (PCM) supplies the HO2S with a reference, or bias, voltage of about 450 mV. When the engine is first started the PCM operates in open loop, ignoring the HO2S voltage signal. Once the HO2S reaches operating temperature and closed loop is achieved, the HO2S generates a voltage within a range of 0–1,000 mV that fluctuates above and below bias voltage. High HO2S voltage indicates a rich exhaust stream; low HO2S voltage indicates a lean exhaust stream.

The HO2S 2 is used for catalyst monitoring. This diagnostic runs once per ignition cycle. This diagnostic consists of two tests, a passive test and an intrusive test. During the passive test, if the HO2S 2 voltage transitions below 300 mV and above 750 mV, the DTC will pass for this ignition cycle. If the DTC does not pass during the passive test, the intrusive test will begin. During the intrusive test, the control module will force the air-to-fuel ratio rich and/or lean. The control module then waits for a predicted response from the HO2S. If the HO2S voltage transitions below 300 mV and/or above 750 mV, the DTC will pass for this ignition cycle. If the control module does not receive the expected response from the HO2S, DTC P2A01 will set.

DTC Descriptor:
This diagnostic procedure supports the following DTC:

DTC P2A01 HO2S Performance Sensor 2

Conditions for Running the DTC:
DTCs P0068, P0106, P0107, P0108, P0112, P0113, P0117, P0118, P0120, P0122, P0123, P0125, P0128, P0131, P0132, P0137, P0138, P0140, P0141, P0171, P0172, P0201–P0206, P0220, P0300–P0306, P0315, P0336, P0442, P0446, P0452, P0453, P0455, P0496, P0506, P0507, P0601, P0602, P0604, P0606, P060D, P060E, P0641, P0651, P1516, P1621, P2A01, P2101, P2120, P2125, P2135, P2138, P2176 are not set.

Passive Test
•The engine is running.
•The Engine Run Time parameter is less than 12 minutes.
•DTC P2A01 runs the passive test once per drive cycle when the above conditions are met.

Intrusive Test
•The Engine Run Time parameter is more than 12 minutes.
•The ignition 1 Signal parameter is between 11–18 volts.
•The Engine Speed parameter is between 1,000–5,000 RPM.
•The Vehicle Speed parameter is between 32–128 km/h (20–80 mph).
•The Short Term FT parameter is between −20 and +20 percent.
•The Air Flow Calculated parameter is between 15–100 g/s.
•The passive test did not pass.
•The maximum number of intrusive attempts is less than 11.
•DTC P2A01 runs the intrusive test once per drive cycle when the above conditions are met for 1 second.

Conditions for Setting the DTC
•The PCM detects that the HO2S 2 did not transition below 300 mV and above 750 mV during the passive test.
•One of the following tests fail:
– The PCM detects that the HO2S 2 is more than 300 mV for 10 seconds.
– The HO2S 1 is less than 300 mV.
– The PCM detects that the HO2S 2 is less than 750 mV for 10 seconds.
– The HO2S 1 is more than 600 mV.
– DTC P2A01 sets within 13 minutes when the above conditions are met.
Action Taken When the DTC Sets•The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.

•The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.

Conditions for Clearing the MIL/DTC
•The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
•A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
•A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
•Clear the MIL and the DTC with a scan tool.

Test Description
The number below refers to the step number on the diagnostic table.

2. If the voltage does not change more that the specified value, the condition isbpresent.

DTC P2A01
Step
Action
Value(s)
Yes
No

Schematic Reference: Engine Controls Schematics

Connector End View Reference: Engine Controls Connector End Views or Powertrain Control Module Connector End Views

1 Did you perform the Diagnostic System Check – Vehicle?
—
Y Go to Step 2
N Go to Diagnostic System Check - Vehicle

2
 1. Start the engine.
 2. Allow the engine to reach operating temperature. Refer to Scan Tool Data List.
 3. Operate the engine at 1,500 RPM for 30 seconds.
 4. While observing the Heated Oxygen Sensor (HO2S) 2 Voltage parameter with a scan tool, quickly cycle the throttle from closed throttle to wide open throttle, 3 times.
Did the HO2S 2 Voltage parameter change more than the specified value? (200 mV)....

If you are getting this code with no others, either the O2 sensor itself is bad or there is an issue wit the wiring, If the code is constant and the only one present, and the SES is on solid, it is likely the rear O2 sensor itself ( or the integrated heater). If the heater was dead you should get a code for slow performance or out of range for that sensor and you're not.

 

We have 4 identical 2007 F350/v-10 trucks at work. One of the four has had a rear o2 heater code several times over the years. The dealer replaced the sensor the first time under warranty, I have charged the sensor another three times over the last 9 years. It probably has a crappy connector. The truck has 150k plus miles and about 9000 hours on it. The other three have never had a sensor changed.

 

derf...from what I found my 07 ION uses CANbus.

This is my old scanner: http://www.innova.com/content/suppor...ual_0303_e.pdf

 

It has CAN in the model name so I assume it rads canbus.
It also reads OBD I

It is updateable ofver the net. Maybe its database got corrupted. Might want to upgrade to th latest internal firmware if it id free.

Innovas have a pretty good reputation. I think you can fix it and then sell it to me....seriously

 

This one isn't update-able.

Want me to sell what to you?

 

The scanner, silly!

What is the full model name and number?

 

Innova 3030a

I contacted their support team and asked why it done this, should here back in a couple days.

I looked inside and it has a removable EPROM/BIOS chip, so I'm sure the manufacturer can get an updated one to me or send it in for them to install one.

 

Hey Tooter,

The online description for the 3030a says it comes with a usb cable and usb port for updating through your PC. they may have stopped offering it because they were losing sales giving away free updates, but if you tell them that they are falsely advertising their product and that you should be eligible for at least one free update, maybe you can get what should be yours for nothing.

The more I dug into the specs I found out it only does 30 sec intervals for data updates (not live data) and I thought it did OBD I as well but it does not (my bad).
So I would no longer be interested in acquiring it from you.

But I would definitely beat on Innova until your scanner reads the right code over OBDII for that code. I'm suspecting an updated chip which if you put up a hell of a fight on, you can maybe get for free. Keep us posted