Powertrain Fault codes

welcome! what did you use to read the codes? are you planning on diy?

 

Since the car was operated under unusual conditions, if you haven’t noticed any other symptoms, it might be reasonable to write down and then clear the stored diagnostic trouble codes (DTCs) and see which of them (if any) returns after a few more typical drive cycles.

The car’s software is programmed to store DTCs when it recognizes certain conditions that are not likely to occur in normal driving, but it’s possible that whatever you did to free the car from the snowbank caused some of the same conditions, even though there is nothing actually wrong with the car.

If any DTCs do return, I’d suggest starting with Toyota’s Repair Manual, available by subscription to techinfo.toyota.com, and perhaps through your local public library, if they sponsor access to the ChiltonLibrary service for their patrons. The Repair Manual has general information (“How To Troubleshoot ECU Controlled Systems”) and a step-by-step procedure for each DTC.

Keep in mind that the one-line “fortune cookie” (@ChapmanF's apt term) descriptions of the DTCs can be misleading; the Repair Manual explains the conditions that cause the DTC to be stored or pending, which may or may not indicate that the trouble is the part or problem in the description:

P0606: ECM [Engine Control Module]/PCM [Powertrain Control Module] Processor
P1118: Coolant Temperature Sensor Circuit For Coolant Heat Storage System
P1150: Coolant Path Clog of Coolant Heat Storage System
P0138: Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2)

For example, P1150 says “Coolant Path Clog,” but it really means the reading from a temperature sensor didn’t change the way the software was programmed to expect. Under normal conditions, this may indicate a clog, a stuck valve, a problem with the temperature sensor, or a faulty engine control module.

 

It is possible that you may have damaged the engine coolant heat recovery system pump and/or canister which are located in front of the left front tire, hiding in the wheel well (must remove fender liner for access), and the oxygen sensor downstream of the catalytic converter. So if the last three DTC reappear, check for physical damage in those areas.

 

Your car has logged DTC. The issue is that the reader you are using is not able to retrieve them.

 

What is the solution for p0606?

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Cleaned the catalytic converter of 2008 Prius but milege of petrol is reduced nw i don't know why

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Replace the engine ECU (aka ECM). DTC P0606 means that the ECU has detected internal errors. The ECU contains two processors; they perform mutual monitoring and will log a fault code if the processors produce different outputs.

In this specific case, that fault code means that the two processors either are recommending substantially different throttle positions; or else that they detect substantially different accelerator pedal positions.

Toyota Techstream will enable you to look at freeze frame info to see the conditions under which the DTC was set. You will also need that to enter the vehicle identification number into the replacement engine ECU. DTC P0630 will be logged if the incorrect VIN is present.