P1693 – Turbo Charge Control Circuit Malfunction (Cummins, Dodge)

Code | Fault Location | Probable Cause |
---|---|---|
P1693 | P1693 – Turbo Charge Control Circuit Malfunction (Cummins, Dodge) (Buy Part On Amazon) |
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Manufacturer Specific Definitions for P1693
Make | Fault Location |
---|---|
Audi | Malfunction indicator lamp (MIL) - short to positive |
Buick | Tachometer Circuit Conditions |
Cadillac | Tachometer Circuit Conditions |
Chevrolet | Tachometer Circuit Conditions |
Citroen | Turbo Charge Control Circuit Malfunction |
Dodge | Engine control module (ECM) |
Gm | Tachometer Circuit Conditions |
Hyundai | Transponder No Response Error_Invalid Response |
Jeep | Fault detected in companion engine control module (ECM) |
Kenworth | P1693 - Ether Fluid Control ext pwm driver open circuit / short circuit high |
Kia | MIL - circuit malfunction |
Land Rover | Immobilizer signal |
Lexus | OCV for VVTL Close Malfunction |
Peterbilt | P1693 - Ether Fluid Control ext pwm driver open circuit / short circuit high |
Peugeot | Turbo Charge Control Circuit Malfunction |
Pontiac | Rocker arm oil pressure switch -circuit malfunction |
Porsche | Malfunction Indicator Lamp |
Ram | Engine control module (ECM) |
Saturn | Engine control module (ECM), tachometer output signal -circuit malfunction |
Toyota | Variable valve timing - malfunction |
Volkswagen | Malfunction indicator lamp (MIL) - short to positive |
Table of Contents
- What Does Code P1693 Mean?
- Where is the P1693 sensor located?
- What are the common causes of code P1693?
- What are the symptoms of code P1693?
- Get Help with P1693
What Does Code P1693 Mean?
OBD II fault code P1693 is a manufacturer specific code that is defined by car maker Dodge as “Turbo Charge Control Circuit Malfunction”, and is set (somewhat counter intuitively) when either, or sometimes both the ECU (Engine Control Unit) and the PCU (Powertrain Control Unit) detect(s) that additional codes are stored in one or both control modules.
SPECIAL NOTES: Several other manufacturers, including Chrysler, Jeep, and Plymouth also use code P1693 to indicate the presence of trouble codes stored by one or more control modules, but on these applications, code P1693 is defined as “A companion DTC was set in both the ECM and PCM”, which is altogether a more accurate definition.
Still other manufacturers that include Ford, Citroen/Peugeot, and Mercedes also use code P1693 with the definition “Turbo Charge Control Circuit Malfunction”, and as with Dodge Ram trucks, the presence of code P1693 on these applications merely serves to indicate the presence of other codes that are stored in one or more control modules. END OF SPECIAL NOTES.
As mentioned elsewhere, Dodge Ram trucks are controlled by two separate computers, one being the ECU (Engine Control Unit) that performs engine and fuel management functions, and the other being the PCU (Powertrain Control Unit) that controls, manages, and monitors the drive train.
Nonetheless, in terms of diagnostics, code P1693 does not indicate any fault, failure, malfunction, or defect on Dodge Ram trucks fitted with Cummins engines; the only purpose this code has is to indicate the fact that one or more codes are stored in either (or both) the ECU and/or the PCU. As such, it should be noted that code P1693 does NOT directly refer to turbochargers, and/or systems or components that are related to turbochargers or turbocharger boost control circuits/systems in any way, shape, or form.
Note that there is no information available on the reasons why this code appears to refer to turbocharger control circuits on Ram trucks when in fact it does not.
Where is the P1693 sensor located?
Since unlike most other codes that implicate relatively clearly defined systems and/or components, the presence of code P1693 is merely an indication that other codes are stored in one or more control modules and therefore, it is not possible to provide information on the location of every conceivable component on Ram trucks that can fail or malfunction.
Note also that since the location of components can vary greatly depending on the model and production year of a particular Dodge application, it is recommended that a reliable source of technical information is consulted to locate and identify parts, components, and systems correctly to avoid misdiagnoses and the possible unnecessary replacement of parts
What are the common causes of code P1693?
Since code P1693 only serves to indicate the presence of other stored codes in either or both control modules, the stored codes must be extracted with a suitable scan tool or code reader. However, it should be noted that while it is relatively rare for no other codes to be present, it is not altogether impossible for code P1693 to be present in either or both computers without other codes being present as well. In cases where this does happen, it could be the result of (for instance) momentary poor connections almost anywhere in the electrical system, or if, for instance, blown fuses are replaced without clearing the codes(s) relating to the circuit fault.
In both of these example scenarios, one or both computers will set one or more codes but if the fault corrects itself, or when the relevant computer recognizes the fuse replacement, the relevant computer will eventually clear the code(s) automatically, but in some cases, it can happen that P1693 is not cleared along with the other codes. In these cases, code P1693 could persist until it is manually cleared with a suitable scan tool.
Be aware also that on some Dodge applications with Cummins engines, it is possible for code P1693 to set simply as the result of some wheel spin on a slick or loose road surface, or as the result of routine maintenance/repair procedures that required the disconnection of one or more electrical connectors anywhere on the engine and/or fuel management systems, charging system, or transmission control system.
What are the symptoms of code P1693?
Although the observable symptoms of whatever codes are stored along with P1693 are entirely dependent on which codes are stored, some symptoms are common on Ram trucks with Cummins engines, these symptoms being-
- Rough idling or rough running at some engine speeds as the result of injector issues
- No start conditions as the result of fuel pump failures
- Loss of engine power when towing or carrying loads as the result of fuel system issues.
Note though that all stored fault codes must be extracted from both the ECU and PCU before an attempt is made to trace the cause(s) of any symptoms. Failure to do this will almost certainly result in wasted time and one or more misdiagnoses. Moreover, all stored fault codes must be cleared from both the ECU and PCU after repairs are complete in order to prevent a recurrence of code P1693.
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Le cambié la bomba de inyección también la computadora que va en el block de motor. Y ahora el turbo no traba. Esun Cummins 3500 24 valbulas modelo 99
English: I changed the injection pump as well as the computer that goes in the engine block. And now the turbo won’t lock up. Esun Cummins 3500 24 valves model 99
Juan. So there are steps to eliminate this problem via a mopar diagnostic system 1 scan tool. This calls for an update to the pcm. And for this code it is for the companion ecm within the JTEC PCM. It is an authorized software update and can be taken care of at a dodge dealership. Good luck, and I hope they are able to do it for you.
Buen día. Aquí ya me informe con todos los mecánicos y no tienen como actualizar el ecm..me dicen que ni el diler de Dodge lo hace..sabes si el ecm original de pude reparar? El pickup en las mañanas echa humo azul y conforme se va calentando deja de humear. Que otra opción me puedes dar?
Gracias 🙏🙏
Translation:
Good day. Here I already informed all the mechanics and they don’t have a way to update the ecm… they tell me that not even the Dodge dealer does it… do you know if the original ecm could be repaired? In the mornings, the pickup emits blue smoke and as it warms up it stops smoking. What other option can you give me?
Your truck is a little old for the dealer to update something like that. Was the computer programmed after you installed it? It sounds like it may not have been if the turbo won’t lock up. There are learned values in the ecu that get erased when one gets replaced. Instead of having it updated, another option is to see if any of those mechanics or dealer can pair the ecu to the truck. Ecu’s can be repaired, if you can find a company that will do it.
Okay. The computer that I exchanged is used, does it have to be updated? Does it have the same part number as the one that was damaged, do you know of a place where they can be repaired? , I want to repair the original but I can’t find a technician… they tell me they don’t have a way to do it, thanks
Not updated, but programmed. Any dodge dealer should be able to program your used ecu you installed. It’s fine if it is a used one. It just needs paired, or programmed to your truck. There are pretty few electrical repair places who still repair ecu’s…but there are some still around. The part number for the ecu should be 56040199AA if it is automatic. And 56040197AA for a manual transmission. Best of luck.
Ok. Finalmente encontré un diler de Dodge en Ensenada México. Tengo la cita para el lunes para programar la computadora. Te hago saber el resultado..muchas gracias 👍👍
Okay. I finally found a Dodge dealer in Ensenada Mexico. I have the appointment for Monday to program the computer. I’ll let you know the result.. thank you very much 👍👍
Great! I’m glad to hear. You’re welcome.