Ram Truck 1500, 2500 & 3500 (2006-2008)

6.7L L6 VIN A Std 7

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Trouble Code: P1492



Battery Temperature Sensor Circuit High Input

Possible Causes:



BTS signal circuit is open between the Sensor and the PCM
 
BTS ground circuit is open between the Sensor and the PCM
 
BTS (Sensor) is damaged or the PCM has failed
 

Trouble Code: P1493



Battery Temperature Sensor Circuit Low Input

Possible Causes:



BTS circuit is shorted to ground between Sensor and the PCM
 
BTS (Sensor) is damaged or has failed
 
PCM has failed
 

Trouble Code: P1494



EVAP Leak Detection Pump Switch Or Mechanical Fault

Possible Causes:



LDP switch signal circuit is open or shorted to ground
 
LDP switch power circuit is open (test power to Fused Ignition)
 
LDP vacuum hose is clogged, loose or restricted
 
LDP assembly is damaged or has failed (the switch has failed)
 

Trouble Code: P1495



Leak Detection Pump Solenoid Circuit Malfunction

Possible Causes:



LDP power supply circuit from the ignition switch is open
 
LDP solenoid control circuit is open or shorted to ground
 
LDP assembly is damaged or it has failed
 
PCM has failed
 

Trouble Code: P1501



Vehicle Speed Sensor No. 1/2 Drive Wheel Correlation

Possible Causes:



Other active Bus or Communication DTCs
 
Incorrect tire circumference
 
PCM has failed
 

Trouble Code: P1502



Vehicle Speed Sensor No. 1/2 Non-Drive Wheel Correlation

Possible Causes:



Other active Bus or Communication DTCs
 
Incorrect tire circumference
 
PCM has failed
 

Trouble Code: P1572



Brake Switch Stuck ON

Possible Causes:



Brake switch 1 signal is shorted to ground
 
Brake switch 2 signal is open
 
Stop lamp switch has failed
 
PCM has failed
 

Trouble Code: P1573



Brake Switch Stuck ON

Possible Causes:



Brake switch 1 signal is shorted to ground or to voltage
 
Brake switch 2 signal is open or is shorted to ground
 
Ground circuit is open
 
Fused ignition switch output is open
 
Stop lamp switch has failed
 
PCM has failed
 

Trouble Code: P1593



Speed Control Switch Stuck Operation

Possible Causes:



Intermittent speed control switch 1/2 stuck DTC
 
S/C switches or Steering Column Control Module malfunctioning
 
S/C signal circuit open or shorted ground or to battery voltage
 
S/C switch signal circuit shorted to switch return circuit
 
S/C Sensor ground open
 
PCM has failed
 

Trouble Code: P1598



A/C Pressure Sensor Circuit High Input

Possible Causes:



A/C pressure Sensor circuit is open or shorted to VREF (5V)
 
A/C pressure Sensor ground circuit is open
 
A/C pressure Sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P1599



A/C Pressure Sensor Circuit Low Input

Possible Causes:



A/C pressure Sensor circuit is shorted to ground
 
A/C pressure Sensor power circuit is open
 
A/C pressure Sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P1602



PCM Not Programmed

Possible Causes:



Program the PCM and then retest for this same trouble code
 
PCM has failed
 

Trouble Code: P1603



Powertrain Control Module Internal Dual-Port Ram Communication

Possible Causes:



Fused ignition switch output is missing (off-start-run circuit)
 
PCM is damaged or it has an internal failure
 

Trouble Code: P1604



PCM Internal Dual-Port Ram Read/Write Integrity Failure

Possible Causes:



Fused ignition switch output is missing (off-start-run circuit)
 
PCM is damaged or it has an internal failure
 

Trouble Code: P1607



Powertrain Control Module Internal Shutdown Timer Rationality

Possible Causes:



Fused ignition switch output is missing (off-start-run circuit)
 
PCM is damaged or it has an internal failure
 

Trouble Code: P1618



Primary 5V Sensor Reference Voltage Malfunction

Possible Causes:



Primary 5V supply circuit open or shorted to ground or to battery voltage
 
5V Sensor has failed
 
PCM has failed
 

Trouble Code: P1628



Auxiliary 5V Sensor Reference Voltage Malfunction

Possible Causes:



Auxiliary 5V supply circuit open or shorted to ground or to battery voltage
 
5V Sensor has failed
 
PCM has failed
 

Trouble Code: P1652



Serial Communication Link Malfunction

Possible Causes:



TCM cannot communicate with the Instrument Cluster (MIC)
 
TCM cannot communicate with the Powertrain Control Module
 
PCM/TCM is damaged or it has an internal failure
 

Trouble Code: P1682



Charging System Voltage Too Low

Possible Causes:



Battery positive or Fused Ignition circuit has high resistance
 
Generator drive belt out-of-adjustment or worn out
 
Generator field circuit has a high resistance condition
 
PCM has failed
 

Trouble Code: P1684



Battery Has Been Disconnected

Possible Causes:



Quick Learn procedure was performed with scan tool
 
TCM battery direct (B+) circuit is open or disconnected
 
TCM power ground circuit is open
 
PCM/TCM was disconnected or it has been replaced
 

Trouble Code: P1687



No Cluster Bus Messages

Possible Causes:



Data Bus circuit from SKIM to PCM is damaged or it is open
 
PCM unable to communicate with the Body Control Module
 
PCM has failed, or the SKIM is damaged or has failed
 

Trouble Code: P1687



No Communication with MIC

Possible Causes:



Other Bus problems exist
 
Intermittent wiring or connector problems exist
 
PCM has failed
 

Trouble Code: P1694



No PCM Bus Messages

Possible Causes:



Data Bus circuit connector is damaged, open or it is shorted
 
Data Bus circuit to the PCM is damaged or it is open
 
PCM unable to communicate with the body control module
 
Intermittent wiring or connector problems exist
 
PCM has failed
 

Trouble Code: P1695



No BCM Bus Messages

Possible Causes:



Data Bus circuit from BCM to the PCM is damaged or it is open
 
BCM is damaged or has failed
 
TCM unable to communicate with the TCM
 
TCM has failed
 

Trouble Code: P1696



PCM EEPROM Write Operation Denied/Invalid

Possible Causes:



DRB or scan tool displays a "write" failure occurred
 
DRB or scan tool displays "write" refused a second time
 
DRB or scan tool displays SRI mileage invalid (compare the SRI mileage reading to the reading on the odometer)
 
PCM has failed
 

Trouble Code: P1697



PCM Failure (EMR/SRI Mileage Not Stored)

Possible Causes:



Clear the trouble codes and retest for the same trouble code. If DTC P1697 resets, replace the PCM and then reprogram it.
 

Trouble Code: P1719



A/T Skip Shift Solenoid Control Circuit Malfunction

Possible Causes:



Skip Shift solenoid control circuit is open
 
Skip Shift solenoid control circuit shorted to ground
 
Skip Shift solenoid is damaged or has failed
 
PCM has failed
 

Trouble Code: P1775



A/T Solenoid Switch Latched In TCC Position

Possible Causes:



Related DTC P0841 may be present.
 
Intermittent wiring or connector problems
 
Extremely low battery (system) voltage
 
L/R Solenoid pressure switch circuit is open or switch has failed
 
Transmission solenoid pack is damaged or has failed
 
Transmission control relay circuit is shorted to L/R solenoid
 
Valve body engine idle too high
 
Valve body solenoid switch stuck in "lockup" position
 
PCM has failed
 

Trouble Code: P1776



A/T Solenoid Switch Latched In Low/Reverse Position

Possible Causes:



Related DTC P0841 may be present.
 
Intermittent wiring or connector problems
 
L/R pressure switch sense circuit is open, shorted to ground or to voltage
 
Extremely low battery (system) voltage
 
Transmission pan has debris caused by valve body damage
 
Transmission internal problems, SSV sticking, or valve body damage
 
PCM has failed
 

Trouble Code: P1790



A/T Malfunction Immediately After Shift Event

Possible Causes:



Transmission internal mechanical problem
 

Trouble Code: P1794



A/T Speed Sensor Ground Circuit Malfunction

Possible Causes:



Extremely low battery (system) voltage
 
TCM "reset" function has just been performed
 

Trouble Code: P1797



A/T Manual Shift Overheat Malfunction

Possible Causes:



ATF fluid level too high (transmission may be overfilled)
 
Engine Cooling System or engine cooling fan malfunction
 
Excessive drive time in low gear, or aggressive drive patterns
 
Transmission oil cooler is clogged or restricted
 

Trouble Code: P2072



Electronic Throttle Control System Malfunction

Possible Causes:



Throttle plate frozen
 

Trouble Code: P2074



Manifold Pressure/Throttle Position Correlation; High Flow/Vacuum Leak

Possible Causes:



Vacuum leak in hoses or component connections
 
High resistance or resistance to ground in MAP 5V supply or signal circuit
 
MAP Sensor has failed
 
High resistance in MAP ground circuit
 
TP Sensor has failed or is improperly adjusted
 
High resistance or resistance to ground in TP Sensor 5V supply or signal circuit
 
High resistance in TP Sensor ground circuit
 
PCM has failed
 

Trouble Code: P2096



Downstream Fuel System 1/2 Lean

Possible Causes:



Exhaust leak
 
Engine mechanical problem
 
O2 Sensor has failed
 
O2 Sensor signal circuit or return circuit problem
 
Fuel contamination
 

Trouble Code: P2097



Downstream Fuel System 1/2 Rich

Possible Causes:



Exhaust leak
 
Engine mechanical problem
 
O2 Sensor No. 1/2 has failed
 
O2 Sensor No. 1/2 signal circuit or return circuit problem
 
Fuel contamination
 

Trouble Code: P2098



Downstream Fuel System 2/2 Lean

Possible Causes:



Exhaust leak
 
Engine mechanical problem
 
O2 Sensor No. 2/2 has failed
 
O2 Sensor No. 2/2 signal circuit or return circuit problem
 
Fuel contamination
 

Trouble Code: P2099



Downstream Fuel System 2/2 Rich

Possible Causes:



Exhaust leak
 
Engine mechanical problem
 
O2 Sensor No. 2/2 has failed
 
O2 Sensor No. 2/2 signal circuit or return circuit problem
 
Fuel contamination
 

Trouble Code: P2100



Electronic Throttle Control Motor Circuit Malfunction

Possible Causes:



Intermittent condition
 
Throttle plate or bore may have foreign object blockage
 
ETC positive circuit is open or is shorted to battery voltage, to ground, or to ETC negative circuit
 
ETC negative circuit is open or is shorted to battery voltage or to ground
 
Low battery voltage
 
ETC Motor or Throttle Body has failed
 
PCM has failed
 

Trouble Code: P2101



Electronic Throttle Control Motor Malfunction

Possible Causes:



Throttle body assembly may have failed
 
Low battery voltage
 
PCM has failed
 

 
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