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Discussion Starter · #1 ·
My check engine light lit up first morning when I started car. Drove 25 miles to dealer and they took it right in and checked it over for two hours. Looked for any reports of this and found none. They reset and its been fine for 200 miles. Code was a super charger sensor reading high.
 

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Charger SRT Hellcat
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can't say I've ever seen this code.


P1611-SUPERCHARGER BYPASS VALVE POSITION SENSOR 1 CIRCUIT HIGH
Theory of Operation
The Supercharger boost pressure is managed by the use of a Supercharger Bypass (SCB) Valve. The PCM can vary the position of the SCB Valve to control the amount of boost. The SCB system uses two Position Sensors to monitor the SCB blade position. Position Sensors are located within the SCB Valve assembly. Each sensor has its own Signal circuit. Both sensors share a 5-Volt reference circuit (Supply) and a low reference circuit (Sensor Return). The Powertrain Control Module (PCM) monitors the SCB Valve Sensor data. Each Signal circuit provides the PCM with a signal voltage proportional to SCB blade movement. The PCM monitors the data to verify that the indicated SCB position is correct.


When Monitored and Set Conditions
When Monitored: This diagnostic runs continuously when the following conditions are met:
  • With the ignition on.
  • Battery voltage greater than 10.4 volts.
Set Conditions:
  • The TPS 1 Signal voltage is above the maximum calibrated threshold.
Default Actions:
  • The MIL light will illuminate.

Possible Causes

5-VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE
SCB VALVE SIGNAL 1 CIRCUIT SHORTED TO VOLTAGE
SCB VALVE 1 SIGNAL CIRCUIT SHORTED TO THE 5-VOLT SUPPLY CIRCUIT
SCB VALVE SIGNAL 1 CIRCUIT SHORTED TO THE SCB VALVE CONTROL (+) CIRCUIT
SCB VALVE SENSOR GROUND CIRCUIT OPEN/HIGH RESISTANCE
SUPERCHARGER BYPASS VALVE
POWERTRAIN CONTROL MODULE (PCM)
 

· Registered
Charger SRT Hellcat
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6,854 Posts
can't say I've ever seen this code.


P1611-SUPERCHARGER BYPASS VALVE POSITION SENSOR 1 CIRCUIT HIGH
Theory of Operation
The Supercharger boost pressure is managed by the use of a Supercharger Bypass (SCB) Valve. The PCM can vary the position of the SCB Valve to control the amount of boost. The SCB system uses two Position Sensors to monitor the SCB blade position. Position Sensors are located within the SCB Valve assembly. Each sensor has its own Signal circuit. Both sensors share a 5-Volt reference circuit (Supply) and a low reference circuit (Sensor Return). The Powertrain Control Module (PCM) monitors the SCB Valve Sensor data. Each Signal circuit provides the PCM with a signal voltage proportional to SCB blade movement. The PCM monitors the data to verify that the indicated SCB position is correct.


When Monitored and Set Conditions
When Monitored: This diagnostic runs continuously when the following conditions are met:
  • With the ignition on.
  • Battery voltage greater than 10.4 volts.
Set Conditions:
  • The TPS 1 Signal voltage is above the maximum calibrated threshold.
Default Actions:
  • The MIL light will illuminate.

Possible Causes

5-VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE
SCB VALVE SIGNAL 1 CIRCUIT SHORTED TO VOLTAGE
SCB VALVE 1 SIGNAL CIRCUIT SHORTED TO THE 5-VOLT SUPPLY CIRCUIT
SCB VALVE SIGNAL 1 CIRCUIT SHORTED TO THE SCB VALVE CONTROL (+) CIRCUIT
SCB VALVE SENSOR GROUND CIRCUIT OPEN/HIGH RESISTANCE
SUPERCHARGER BYPASS VALVE
POWERTRAIN CONTROL MODULE (PCM)
If it's using 2 position sensors one should increase while the other decreases. If it's not hardwired from PCM to sensor I would suspect the connection in between and in either case check the pin fit but I have no wiring diagram. I seriously doubt it's the PCM.
 

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Hmmmmmm, maybe there is a way to tweak this to stay open longer/ or closed longer????
Doc was playing with the valve, it's an 80mm throttle body if my memory serves me right
 
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Charger SRT Hellcat
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If it's using 2 position sensors one should increase while the other decreases. If it's not hardwired from PCM to sensor I would suspect the connection in between and in either case check the pin fit but I have no wiring diagram. I seriously doubt it's the PCM.
 

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Thanks chkn filed it!!!!!!

ramair111

Unless the description of operation is wrong I'd concentrate on the pin fit and crimp at pin 5 at the SCB and pin 40 at the PCM. If the DTC code is correct it can't be the 5 volt reference or the sensor ground because these are shared between the sensors. Checking pin fit is easy enough. Then do a voltage drop test on the wire itself using a halogen headlight bulb and an external power source. If those were okay while you have either pin out starting the car should set the same DTC.
 

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Discussion Starter · #19 ·
Thank you B5 ,if it happens again I will show this to the SM.
Thanks chkn filed it!!!!!!

ramair111

Unless the description of operation is wrong I'd concentrate on the pin fit and crimp at pin 5 at the SCB and pin 40 at the PCM. If the DTC code is correct it can't be the 5 volt reference or the sensor ground because these are shared between the sensors. Checking pin fit is easy enough. Then do a voltage drop test on the wire itself using a halogen headlight bulb and an external power source. If those were okay while you have either pin out starting the car should set the same DTC.
 
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