Jeep Commander Forum banner

Getting Diagnostic Trouble Codes (DTC) without an OBD-II scanner/reader - the Key Dance.

165K views 105 replies 45 participants last post by  2010 inferno 
#1 ·
Edited by @Big Blue on 1/05/2022;

The Key dance is performed by turning the ignition switch on/off 3 times quickly - On the 3rd cycle, you keep it in the ON position - DO NOT turn it off on the 3rd cycle.

Any current or stored DTC's will be displayed in the EVIC. (Electronic Vehicle Information Center )


Found this video in Youtube to show how to get the Diagnostic Trouble Codes DTC (if any) without the need to get DTC reader.

I knew about this was working on older Jeeps but didn't know it is also working in the new Commander as well.

I tried it and got this code (U0121), googled it and found it (Lost Communication With Anti-Lock Brake System (ABS) Control Module), and that was due to the switch I made to disable the ABS fuse manually to turn off the Traction Control when offroading.


Update 15-Oct-08 : Working video..

 
#2 ·
Great find, Ahmed ! I just went out and tried it and it works !
 
#3 ·
Good, any codes? or just got (Done) without codes.
 
#4 ·
Ahmed said:
Good, any codes? or just got (Done) without codes.
"Done" -- no codes.
 
#7 ·
Ranger6882 said:
Ok, I turned off and on about 6 times just getting outside temp reading, What am I doing wrong? Not holding my mouth right?
Only three times, and on the 3rd time you keep it in ON ,, I think you need to be a bit fast as in the video
 
#8 ·
DTC...done
 
#13 ·
Ranger6882 said:
was not aware of the tilt of the back seats, you are referring to the 3rd row?
Second row.
 
#15 ·
XJaiger said:
I get the same thing, I'm not sure what I'm doing wrong.
I do it fast like in the video, also tried it a not so fast.
I just did exactly like in the video and it worked.... just try again, you will make it.
 
#17 ·
Tried it today and it worked. Nice fine Ahmed. Thanks!!!
 
#18 ·
All (well most) Chrysler vehicles have done this since the 1987 horizon the wife had when we were dating! I didn't even think to try it on my JEEP though! DUH!
 
#20 ·
DTC...DONE

Awesome! Now I can refer the code to the Service Manual to figure ANYTHING out. If anyone can't find the code translation online, get with me and I will send you what the book says, and even scan the fix for ya.
 
#21 ·
some Jeep specific DTCs:

P1192 Inlet Air Temp. Circuit Low
P1193 Inlet Air Temp. Circuit High
P1195 1/1 O2 Sensor Slow During Catalyst Monitor
P1196 2/1 O2 Sensor Slow During Catalyst Monitor
P1197 1/2 O2 Sensor Slow During Catalyst Monitor
P1198 Radiator Temperature Sensor Volts Too High
P1199 Radiator Temperature Sensor Volts Too Low
P1281 Engine Is Cold Too Long
P1282 Fuel Pump Relay Control Circuit
P1283 Idle Select Signal Invalid
P1284 Fuel Injection Pump Battery Voltage Out Of Range
P1285 Fuel Injection Pump Controller Always On
P1286 Accelerator Pedal Position Sensor Supply Voltage Too High
P1287 Fuel Injection Pump Controller Supply Voltage Low
P1288 Intake Manifold Short Runner Solenoid Circuit
P1289 Manifold Tune Valve Solenoid Circuit
P1290 CNG Fuel Pressure Too High
P1291 No Temp Rise Seen From Fuel Heaters
P1292 CNG Pressure Sensor Voltage Too High
P1293 CNG Pressure Sensor Voltage Too Low
P1294 Target Idle Not Reached
P1295 No 5 Volts To TP Sensor
P1296 No 5 Volts To MAP Sensor
P1297 No Change in MAP From Start To Run
P1298 Lean Operation At wide Open Throttle
P1299 Vacuum Leak Found (IAC Fully Seated)
P1388 Auto Shutdown (ASD) Relay Control Circuit
P1389 No Auto Shutdown (ASD) Relay Output Voltage At PCM
P1390 Timing Belt Skipped One Tooth or More
P1391 Intermittent Loss of CMP or CKP
P1398 Mis-Fire Adapter Numerator at Limit
P1399 Wait To Start Lamp Circuit
P1403 No 5 Volts To EGR Sensor
P1475 Aux. 5 Volt Output Too High
P1476 Too Little Secondary Air
P1477 Too Much Secondary Air
P1478 Battery Temp Sensor Volts Out of Limit
P1479 Transmission Fan Relay Circuit
P1480 PCV Solenoid Valve
P1482 Catalyst Temperature Sensor Circuit Shorted Low
P1483 Catalyst Temperature Sensor Circuit Shorted High
P1484 Catalytic Converter Overheat Detected
P1485 Air Injection Solenoid Circuit
P1486 Evap Leak Monitor Pinched Hose
P1487 Hi Speed Rad Fan CTRL Relay Circuit
P1488 Auxiliary 5 Volt Supply Output Too Low
P1489 High Speed Fan CTRL Relay Circuit
P1490 Low Speed Fan CTRL Relay Circuit
P1491 Rad Fan Control Relay Circuit
P1492 Battery Temperature Sensor Voltage Too High
P1493 Battery Temperature Sensor Voltage Too Low
P1494 Leak Detection Pump Switch or Mechanical Fault
P1495 Leak Detection Pump Solenoid Circuit
P1496 5 Volt Supply Output Too Low
P1498 High speed Rad Fan Ground CTRL Rly Circuit
P1594 Charging System Voltage Too High
P1595 Speed Control Solenoid Circuits
P1596 Speed Control Switch Always High
P1597 Speed Control Switch Always Low
P1598 A/C Pressure Sensor Volts Too High
P1599 A/C Pressure Sensor Volts Too Low
P1602 PCM Not Programmed
P1680 Clutch Released Switch Circuit
P1681 No I/P Cluster CCD/J1850 Messages Received
P1682 Charging System Voltage Too Low
P1683 Speed Control Power Relay Or Speed Control 12 Volt Driver Circuit
P1684 Battery Disconnected Within Last 50 Starts
P1685 Skim Invalid Key
P1686 No SKIM Bus Message Received
P1687 No Cluster Bus Message
P1688 Internal Fuel Injection Pump Controller Failure
P1689 No Communication Between ECM & Injection Pump Module
P1690 Fuel injection pump CKP Sensor Does Not Agree With ECM CKP Sensor
P1691 Fuel Injection Pump Controller Calibration Failure
P1693 DTC Detected In ECM Or PCM
P1694 No CCD Messages Received From ECM
P1695 No CCD/J185O Message From BCM
P1696 PCM Failure EEPROM Write Denied
P1697 PCM Failure SRI Mile Not Stored
P1698 No CCD Messages Received From PCM
P1719 Skip Shift Solenoid Circuit
P1740 TCC Or OD Solenoid Performance
P1756 Governor Pressure Not Equal To Target At 15–20 PSI
P1757 Governor Pressure Above 3 PSI When Request Is 0 PSI
P1762 Governor Pressure Sensor Offset Improper Voltage
P1763 Governor Pressure Sensor Voltage Too High
P1764 Governor Pressure Sensor Voltage Too Low
P1765 Trans 12 Volt Supply Relay Control Circuit
P1899 Park/Neutral Position Switch Stuck In Park or In Gear
 
#22 ·
Nice, just made a copy to put in my glove box!:D
 
#23 ·
Here is another long list of DTCs.... http://www.skpang.co.uk/dtc_list.htm



and here is some explanation how the code is structured.
-------
OBD2 Codes Explained

OBD-II codes consist of a number of parts. Here is a sample OBD2 code: P0171

Here is a breakdown of what each digit of the code means:

First Character - System

The first character identifies identifies the system related to the trouble code.

* P = Powertrain
* B = Body
* C = Chassis
* U = Undefined

Second Digit - Code Type

The second digit identifies whether the code is a generic code (same on all OBD-II equpped vehicles), or a manufacturer specific code.

* 0 = Generic (this is the digit zero -- not the letter "O")
* 1 = Enhanced (manufacturer specific)

Third Digit - Sub-System

The third digit denotes the type of sub-system that pertains to the code

* 1 = Emission Management (Fuel or Air)
* 2 = Injector Circuit (Fuel or Air)
* 3 = Ignition or Misfire
* 4 = Emission Control
* 5 = Vehicle Speed & Idle Control
* 6 = Computer & Output Circuit
* 7 = Transmission
* 8 = Transmission
* 9 = SAE Reserved
* 0 = SAE Reserved

Fourth and Fifth Digits

These digits, along with the others, are variable, and relate to a particular problem

For example,a P0171 code means P0171 - System Too Lean (Bank 1)
 
#24 ·
Any idea how to clear the old codes without StarScan ? ,, the ABS code (U0121) (Lost Communication With Anti-Lock Brake System (ABS) Control Module) is still there although I didn't turn off the ABS since a week !
 
#25 ·
Nice! Thanks again Ahmed!
 
#26 ·
I'm not sure you can reset the codes with that technique. I've got a device by AutoXray that can read the codes, reset them and do live testing and real time data collection that I use. The codes have saved me several times from taking a car back to the dealer to find out it was nothing but loose hose... I've got all the adapters and have used it on all my cars from about '86 on.

Now, if it (the AutoXray device) would only allow me to access the computer input like the StarScan will...unfortunately it is only an ODBC tool...
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top