Questions tagged [dtc]

Diagnostic Trouble Code

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57 views

If the check engine light is off does than mean your car is fine?

I been get heavy into the scanning tools lately on my Ford van (98 e150 5.4). Anyhow... I'm layin into it deep like all these readins of temperatures and such. For example, I see "head cylinder ...
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22 views

Which DLC terminals are known as DLC bias terminals (or should it be DLC Bus terminals)

This is related to Test 5 of this question: OBD II Scanner refuses to communicate with the vehicle! Funny that I should be asking this but then .....it happens Unfortunately, I cannot remember. I'd ...
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1answer
38 views

help me understand Dodge code p0430

2004 Dodge Ram 1500 4.7 had a bank 1 sensor 1 code come on so I changed that sensor along w/plugs and coils, then drove about 2 miles truck started missing little. Code now reads P0430 and seems ...
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1answer
36 views

Can anyone provide documentation for the 2011 chevy cruze eco grill shutters?

I'm trying to understand how they work and where the motor is since I am unable to get the plastic off the bottom of the grill to access them directly. Mine seem to move if I slowly torque them ...
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32 views

Engine Scanner: is this a Rich Condition?

2013 Accent 1.6 GDI 255K miles. 20K ago I replaced converter. Within that time I've replaced plugs, coils, cam and crank sensors, O2 and AF (Lamba) sensors. I'm getting an intermittent 420 code and ...
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61 views

P0171 2014 Ford Fusion

2014 Ford Fusion with 2.0L Ecoboost. Car is displaying CEL with a code of P0171. At Idle in Closed Loop LTFT is at 29% STFT is around 0% Downstream O2 is steady at around 0.7 volts Not sure how to ...
3
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1answer
779 views

Can lack of oil cause P0300 Random Misfire?

I get OBD code P0300 Random Misfire (and no other error codes) on a very poorly maintained car. I changed the valve cover (whose spark plug well gaskets were degraded) and spark plugs, but the engine ...
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18 views

Meaning of DTC Code 4331 for Volvo EPS (Electrical Power Steering Module)

It's possible I am reading the scan tool wrong or it is investigating a module that does not exist. For a 2008 Volvo S40 I get the following: EPS - Electrical Power Steering Module 4331(1/1) Not ...
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111 views

2000 Honda Accord P1167 code

My Accord threw the P1167 code. I have changed out the 02 sensor. Code went away and then came back. I checked the ecu fuse it is not blown. What else could cause this code to stay on?
2
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1answer
55 views

Can you see what version of ELM327 an OBD2 diagnostic scan tool/fault code reader supports?

According to https://en.wikipedia.org/wiki/ELM327#Other_Versions there is a handful of different versions of ELM327. If you buy a non-genuine ELM327-device (that is, something that is compatible with ...
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58 views

P0101 and P2113 codes removal Kia Rio 2011

I have a KIA Rio Diesel car from 2011. With a diagnostic tool I have read the P0101 and P2113 DTC's: I had an old and problematic throttle body. I have replaced it with a completely new one and took ...
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7 views

Retrieving ABS codes from a 2001 toyota camry (Bosch system)

From what I found when I searched google is: "(For Denso systems - remove short pin from DLC) connect Tc with E1, Then turn ignition to on and the ABS light will flash the codes" I have a Bosch system ...
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23 views

Check Engine missing fault code: Missing really or not readable by odb reader?

I recently had a serious engine problem which caused the "check engine" light to go on and the engine can now not even be started. I checked the ODB dtc / fault codes in 2 ways: An undocumented "...
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104 views

Nissan Qashqai “Test Mode”: What does the data mean?

I learned about a "test mode" for the display, which can be used for diagnostics, without an obd reader. I managed to get inside the test mode, but I am baffled by the data and am not sure what it ...
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3k views

Error stabilisation control- ESC and engine stopped and wouldn't start again

I drive a 2014 2,0 TDI 4w Passat and until now haven't had any problems with the vehicle. When I drove to work on Friday the vehicle suddenly stoppen in a roundabout and wouldn't start again. Check ...
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33 views

Car jerking when engine warms up

Hey so my car drives great when the engine is cold, but once it warms up to 90 degrees it starts jerking a lot when pressing accelerator. I scanned the car and got codes: p0340(camshaft position ...
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1answer
101 views

How difficult is it to collect obd commands ?Will it be different for different brands?

OBD is something very interesting I found these days.Thanks to this repo https://github.com/pires/obd-java-api & wikipedia which provides the basic information of PIDs.But there is a lot of ...
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1answer
6k views

sudden extreme rough idle, no codes but several recent issues

I've suddenly had issues with my car, a 97 Maxima, over the last week. No issues at all before these events. First, last thursday a coil went bad which produced #2 cylinder misfire and ignition ...
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236 views

2006 Mazda MX-5 P0126 + B1318

2006 MX-5 57k Miles USDM 2.0L 6-Speed P0126 and B1318 Set but no light on/Sporadic illumination. Coolant reservoir is full. https://www.obd-codes.com/p0126 That site references that there's a TSB ...
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1answer
230 views

2007 Dodge Charger 2.7L A/T - Limp Mode only on Heavy Throttle & Hanging in Gear

Back with an update. Trying to help out my neighbor here. 2007 Charger with a 2.7L. 100k+ Miles on the body/transmission. "If I drive very carefully I can get it up to highway speed. If I romp on it,...
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2answers
2k views

Decoding VW Airbag DTC from elm327

I am using PuTTY (similar to HyperTerminal) and elm 327 (OBD Link LX) on my VW Polo 2015 model to read Airbag DTCs. Command sent: AT SH 715 Received: OK Command sent: AT CRA 77F ...
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1answer
124 views

Diagnosing silent misfires

2003 Honda Civic EX (~230,000 miles) has been giving me misfire codes for a while, mostly on cylinders 2 & 3, but sometimes 4. P0300 Random cylinder P0302 Cylinder 2 P0303 Cylinder 3 P0304 ...
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2answers
11k views

DTC checking while engine running

Why it is said that DTC (Diagnostic Trouble Code) should not be checked when the engine is running?
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1answer
254 views

Is the vehicle code gone or does a mechanic have to clear it?

So my truck had an emissions leak for the longest time therefore the check engine light was on and I had a code on it. I just replaced some parts on the truck and the check engine light turned off. ...
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0answers
1k views

BMW CAN bus data format

https://www.reddit.com/r/CANBus/comments/39pzpp/bmw_3series_2015_odometer_reading/ I am using the above website as reference and sending commands to engine ECU. I have a log from BMW engine ECU (below)...
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0answers
1k views

OBD request trouble code mode 3 and mode 7

I'm trying to get my own app on phone to read Trouble code in car... I see that i have 3 mode to do this... first is to use the mode 01 with command 01 (but this command is generic) or the mode 03 and ...
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1answer
3k views

GM P0420 Code - Eliminating Possible Causes in Chevy G10

I have a 1996 Chevy G10 van with 14X,XXX miles on it. It has the 5.0 engine. I do not have a scanner myself, but, according to a shop, the van was throwing code P0420. According to my research, this ...
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43 views

2003 jetta 2.0 was great until the fuel pump went out

Got the car for $800 needed pads and rotors all around. Only driven on weekends for a month and was great. The fuel pump went out I replaced with a rebuild and the sending line broke while putting it ...
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1answer
800 views

VAG TP 2.0 complete list of AT commands

I am trying to find DTCs from various ECUs in a Skoda Rapid 2009 model. I am using OBDLink SX (elm 327 chip) and Putty (similar to HyperTerminal) https://jazdw.net/tp20 This link gives the list of ...
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2answers
6k views

Classifying a DTC as active, past or potential

Scantools always classify a DTC as active/current, history/past, potential/memory. How do they classify that? Sample raw data: 80 F1 5A 05 58 01 C1 00 20 0A Can you help classify it as past, ...
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1answer
235 views

Not receiving multi line response ELM 327

I am sending the following commands to my Hyundai i20 2012 model (OBDLink SX Bluetooth device): AT Z AT H1 AT L1 AT S1 AT AL AT SP6 AT SH 7D1 18 00 FF 00 The response I am getting is 7D9 10 0B 58 03 ...
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3answers
179 views

Is hot desert weather the source of my recurring car problem?

I have a 2004 ford ranger with a short history of problems...the engine is v6 3.0L OHV. 1) It died 2 summers ago, stopped right in the road, around noon in the middle of July. I live in Tucson so it ...
3
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1answer
8k views

VW Golf 6 2010 error code P2455

While driving, I heard a beeping sound from dashboard. When I looked at it, it showed "glow plug icon," it blinked 3 time and on the screen it said something like "Engine Fault - Workshop". Then I ...
3
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1answer
83 views

Would my 2005 Focus's computer have a memory of past faults?

A little over a year ago the coil pack failed. Engine was underpowered because it only running on 3 cylinders. I took it to a local garage who replaced it and it's been running fine. Last week the ...
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2answers
2k views

Replace or Repair Mazda MPV 2000 faulty ECU?

I asked a question about troubleshooting ECU related short circuits. No more short circuits in the wiring harness, the only short left appears to be inside the ECU. This leaves me with a faulty ECU. ...
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31 views

Data for car parts and sensors [duplicate]

If a fault code appears in the OBD scanner, how tough is it to map the fault to the part of the car that is causing the problem? Is there any website (or api or mobile app) that has this mapping so ...
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2answers
1k views

How do I go about troubleshooting DTC codes?

When the check engine light (CEL) comes on, there is usually a diagnostic trouble code (DTC) that can be read from the OBD-II (onboard diagnostic) port on modern codes. How do I go about using the ...
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1answer
1k views

How are EVAP system leaks detected by the ECU?

I am curious which sensor(s) detects an EVAP leak and throw error codes, for example: P0442 - EVAP System Leak Detected (small leak) P0455 - EVAP System Leak Detected (large leak) My car is a 2003 ...
6
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1answer
679 views

Check engine light with code P0455 comes on when fuel tank is below 3/4 full

In my 2001 Mazda Miata, the check engine light comes on when the fuel tank is at the 3/4 full mark. The code is DTC P0455 - Evap System Large Leak Detected I have replaced the fuel cap already. What ...
3
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1answer
602 views

Mode 01 PID 01 OBD-II

https://en.wikipedia.org/wiki/OBD-II_PIDs#Mode_1_PID_01 Mode 01 PID 01 - Monitor status since DTCs cleared. In the 1st chart, B7 is 'Reserved' and must be 0. But for a few cars (like Skoda Rapid) ...
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1answer
813 views

P2104 Throttle Actuator Control System Forced Idle error, but car runs fine

2 days ago, I had to jump start my 2009 Chevrolet Aveo. I suspect I left the interior light on all night which drained the battery. After I started the car, the engine warning indicator was on. (It ...
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0answers
569 views

Check engine light is on but no codes provided when checking with reader [closed]

I have a 2004 Chevy Trailblazer. My check engine light is on, but I'm getting no codes when checking with reader only blank screen. How could this happen?
4
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1answer
3k views

Hyundai Santa Fe 2004 3.5L Random Misfire hesitates when accelerating

I have a 2004 Hyundai Santa Fe 3.5L V6. When I was driving a couple of days ago the check engine light flashed and after a while it stayed on. The codes are P0300 which is a random misfire as well ...
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61 views

What is code p2647 for 2000 camaro z28

I have code P2647 on a 2000 Camaro Z28. What is this code and what is the fix for this code? The engine is making a loud lifter noise when starting.
2
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1answer
155 views

Trouble Code decoding

I've got a trouble code in my car and unable to figure how to decode it. 008 0: 43 03 00 59 01 54 43 00 1: 01 55 AA AA AA AA AA I can understand the response is in multiple frames, but unable to ...
9
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3answers
65k views

Do fault codes get recorded with a time stamp into a log with a history of DTCs?

Just scanned my vehicle for the first time to check out the code for a Check Engine Light. I grew curious if these fault codes get logged somewhere with a date and time stamp of some kind at the time ...
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0answers
81 views

How to fix P0335 and P0727 error codes for Cadillac Catera 2000?

Make: Cadillac Model: Catera Engine: 3.0L Year: 2000 Error codes: P0335,P0727 Knowledge level: I know little about cars Help needed: Please help me find out what is going on and how to fix it.
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1answer
690 views

Honda Accord Maintenance Minder accidental reset/ what to do now?

I changed the oil on my 2015 Honda Accord LX myself for the first time. Following a YouTube video, I reset the Maintenance Minder. The problem is that I didn't note the extra codes that show up on the ...
9
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2answers
3k views

1999 Subaru Forester - bad acceleration, rough shifting

I have a 1999 Subaru Forester with an automatic transmission and a 2.5 Liter Motor. It has poor acceleration and rough shifting I started to notice 'hesitation' on take off. It just slowly appeared....
4
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1answer
4k views

1999 Jeep Cherokee 4.0L electrical problems

I am new to this and in need of some advice. I just purchased a 1999 Jeep Cherokee 4.0L, with 211,000 miles and have some electrical problems. I noticed that one of the two green wires on the back ...