The diagnostic codes of the Dodge RAM indicate the engine and transmission problems. They are a blend of alphabets and digits.
Furthermore, they appear on the dashboard display and warn about truck problems. I have explained several diagnostic codes of this pickup truck.
P0443 and P0455
These diagnostic codes appear on the display when the EVAP system undergoes leakage. EVAP is an Evaporative Emission control system that stabilizes internal pressure.
The fuel pump, storage tank, purge, and vent valves are part of the EVAP system. Both of them show the leakage of this EVAP.
P0601
It shows the problems of the control module of the Dodge Ram. It appears when the PCM does not work.
The Powertrain control module finds the internal faults and triggers it. The modules lack communication which causes this code on the display center.
P0138
It is an exhaust-related code on the Dodge Ram. It indicates the high voltage of the circuit for about 5 to 10 seconds.
It indicates oxygen reduction in the exhaust. The fuel approaches sensor two and the engine’s first cylinder.
However, reduced oxygen level triggers it.
P1192 and P1193
The anti-lock brake system of the truck sends the signal to the PCM. P1192 appears and shows the malfunctioning sensor of the inlet air temperature system.
The damaged harness can trigger it. The improper electrical passage and malfunctioning PCM cause it.
P1193 appears when the sensor of the intake identifies a higher temperature. It sends signals to the truck computer, and a warning illuminates.
P1105
It is a specific code of the Powertrain control module. It appears when the manifold absolute pressure valve malfunctions.
The solenoid valve and switch break, which alters the strain and illuminates it on the screen. It appears due to faults in the solenoid circuit.
P1195, P1196 and P1197
Sensor 1 of the fuel system indicates slow action. Its reduced response causes P1195 on the warning display.
The catalyst monitoring becomes slow, which reduces the sensor response. P1196 shows the slow performance of sensor two in a similar system.
The heated and malfunctioning sensor causes it. In addition, these combustions cause internal leaks of the intake manifold, which results in its appearance.
P1197 shows the malfunctioning of sensor one of bank 1. It happens with reduced airflow and leakage of injectors.
P1243
It is an OBDII (onboard diagnostic) code that relates to the timing of the camshaft on the Dodge. The reduced camshaft timing decreases the engine performance.
It causes P1243 on the screen.
P1198 and P1199
The intake harness controls the sensor and undergoes damage. In addition, electrical surges cause its shortage which results in P1198.
It shows the high voltage of the sensor. Furthermore, P1199 shows the low voltage of the temperature sensor of the Dodge radiator.
It appears when the components undergo damage and pins bents.
P1194
It appears when PCM identifies the wrong performance of the throttle system. As a result, the throttle motor breaks down, and the electronic circuit malfunctions.
The harness break, and electric connectivity become poor, which causes it.
P1280 and P1281
The fuel injectors have specific pressure in the Dodge Ram engine. P1280 appears when the strain reduces from standard.
P1281 illuminates when this strain rises higher than the limit. The system identifies it in the relay control circuit.
P1284, P1285 and P1287
The fuel pump has a specific battery voltage which alters with internal electrical changes. For example, it triggers P1284, and continuous activation of the control of the fuel pump results in P1285.
The low current flow of the injection pump triggers P1287.
P1283 and P1282
P1283 shows the idle select signal invalid. It shows a problem with the idle system of the truck.
It monitors and prevents motor stalling during the idling. The broken relay of the fuel pump triggers P1282.
P1289 and P1288
P1289 shows the malfunctioning manifold tune valve. It does not push air to all engine parts through a specific mechanism when the valve harness break.
P1288 shows the broken runner valve harness in the electric circuit.
P1294
The engine idling target monitors the motor rotations. It changes when the internal parts cracks.
PCM receives signals that target idle do not reach the system, which causes P1294.
P1286
A sensor regulates the engine intake in Dodge RAM models. The high or low voltage of the pedal position sensor causes it on the screen.
It warns about incorrect throttle and accelerator response.
P1290, P1293, P1292
Dodge Ram variants have CNG (Compressed natural gas) engines and a regulator to handle fuel flow. The high and pressurized fuel flow causes P1290.
The low voltage of the pressure sensor triggers P1293, and high voltage results in P1292.
P1295 and P1296
A throttle position sensor works in the truck engine. It monitors the valve movement and opening.
It can lose 5V, which triggers P1295. The manifold absolute pressure sensor loses 5V, which causes P1296.
P1291
Fuel heaters are part of the fuel delivery system of a truck. Debris can block its vents, and the temperature does not rise.
As a result, it causes P1291 on the screen.
P1388 and P1389
ASD (automatic shutdown) has a relay that regulates the pump, injectors, and ignition of the Dodge RAM. The electrical circuit malfunctions and damages the relay, which results in P1388.
Its reduced voltage output causes P1389.
P1297
Dodge Ram has manifold absolute strain on the manifold. MAP provides fuel pressure at a stable level.
Its voltage does not change, which indicates its malfunctioning and causing P1297.
P1299
The vacuum system of Dodge undergoes leakage. Radiator breaks and hose malfunctions.
The leakages trigger the P1299 on the display screen.
P1398
Malfunctioning electric circuits, debris, and damage can crack the crankshaft position sensor of the Dodge RAM.
The powertrain module cannot identify its performance. As a result, P1398 illuminates on display.
P0442
The Powertrain control module identifies the leak in the EVAP. It causes this code which warns about gas leaks.
A small broken part causes the leakage, and gases evaporate from the exhaust. They can store in the canister and result in their illumination on screen.
P1390
The camshaft and crankshaft of Dodge have sensors. They have specific alignment, which alters with electrical surges.
You can see P1390 on the screen.
P1391
The camshaft and crankshaft position sensors send intermittent signals. The circuit power flow changes, and engine performance reduces.
P1391 appears to warn about motor defects.
P1298
The injector drive module works with the fuel injection mechanism of the truck. It connects with an electronic control unit and monitors the fuel level in the valve of the ignition.
Corrosion and electric strain damage the IDM and illuminate P1298.
P1403
The exhaust gas reticulation has a specific harness. It connects in the circuit, which undergoes failures.
The poor connection of the EGR sensor damages it. The circuit loses voltage which triggers P1403.
P1399
The tow mirrors have a start lamp harness to change their lights into distinct indicators. It can damage with excessive current load and loses connection stability.
You can see P1399 on the dashboard screen.
P1475
Dodge has a steering angle sensor to regulate its position and movement. Improper handling and wrong steering can damage it.
The voltage output changes and causes P1475.
P1478
The battery temperature sensor measures and checks the circuit heat. The excessive use and power damage increase the voltage range of the sensor.
Its cord breaks and the sensor becomes faulty and illuminates this code.
P1476 and P1477
Fuel injection pump of the truck engine malfunctions. It happens when the O2 sensor becomes faulty and the harness break.
Low air pressure triggers P1476, and high secondary air flow causes P1477.
P1480
The purge control solenoid valve has a harness that connects with the engine and its intake. It brings gas from the canister to the manifold.
Short circuits can break this harness and result in P1480.
P1478 and P1479
The temperature sensor of the battery undergoes excessive current loads. Heat and pressure can break the sensor, and wires undergo damage.
You can access the P1478 on the display screen. The electric fan cools the motor and depends on a relay.
Electrical surges break the switch and trigger P1479.
P0442 and P0455
These codes show the leakage of the emission control system. More gases evaporate and reduce the tank levels.
The loose gas tank cap results in these leakages and illuminate them.
P0138
The Dodge engine has oxygen sensors. They fail when the power reduces from the threshold.
Sensor 2 fails when the current stabilizes below 1.2V for 5 to 10 seconds. Oxygen level reduces and triggers P0138.
P0601
It shows the errors of the microprocessor of the Powertrain module of Dodge. It is a PCM memory checksum problem when the module identifies internal defects.
Failure of memory checksum triggers it.
P1481, P1483 and P1482
The speed sensor has a connected harness that breaks. As a result, electric changes damage it and cause P1481.
Fan clutches harness break, and cause P1483. The glow plug module harness regulates the combustion when you start the motor. It breaks and causes P1482.
P1486
The evaporative emission system can control the emissions of vapors. The emission system undergoes leakage, and vapors evaporate excessively.
You can identify P1486 on the screen.
P1489 and P1490
The Dodge radiator has a fan that works with an electric relay. The modified current flow and heat damage the relay.
The circuit flow changes, and the fan speed increases, which triggers P1489. The speed decreases to cause P1490.
P1484
The exhaust system works at a standard temperature in Dodge Ram. However, its excessive usage increases heat, which reduces sensor efficiency.
The overheated catalytic converter and fluctuated current cause this code.
P1488
It has an auxiliary outlet for optimized power flow to connected gadgets. It has a 5V power flow.
The outlet power supply becomes low and results in P1488.
P1496
The engine protection of the Dodge activates. It shuts off the motor gas reticulation system.
The diesel particulate filter deactivates, which causes this code.
P1499
It has a hydraulic cooling fan solenoid circuit that undergoes power-related failures. Its malfunctioning causes P1499 on the instrument cluster.
The fan cannot stabilize the coolant and oil temperature.
P1594
The alternator harness can draw current from the engine. It stabilizes alternator performance for the stability of the truck battery.
The circuit changes when electric volts become high and break the harness to illuminate the code.
P1595
The speed control brake switch regulates the cruise system on truck. It is an electric switch which damages when the power flow fluctuates.
In such circumstances, you can identify a warning code and shows its defects.
P1598 and P1599
Dodge Ram air conditioner has pressure regulating sensors. Their power flow increases and triggers P1598.
Low voltage range causes P1599.
P1602
It appears when the Powertrain module loses programming. It happens when the volts increase and the actuators undergo short circuits.
PCM malfunctions and illuminates warning.
P1681
The instrument cluster regulates and monitors different procedures. A malfunctioning regulator affects its performance.
The digital instrument cluster stops and does not show specific information. For example, you can get a message which shows no instrument panel cluster.
It illuminates this warning on the display center of the pickup truck.
P1683
Speed control power replay of Dodge RAM can regulate the highest and lowest speed limits. Its circuit malfunctions when the power flow varies.
In such circumstances, you can access P1683 on the screen.
P1682
It appears when the generator undergoes damage on the truck. The generator belt becomes loose, and voltage decreases beyond the threshold.
Its circuit connection becomes loose and reduces the stability of the charging procedure.
P1686 to P1687, P1685
The Powertrain module regulates the SKIM (Smart key immobilizer module). Therefore, the defective immobilizer key can trigger P1686.
The module undergoes failures and receives no cluster bus message, which shows that the modules lack communication.
It causes P1687 on the display unit of the pickup truck. The faulty ignition and malfunctioning immobilizer module cause P1685.
P1684
A stable battery connection is essential with the power circuit for optimized performance. Therefore, the code appears when the battery disconnects for a long time.
The module identifies the previous 50 truck starts.
P1688
The fuel pressure of engine stabilizes its performance and durability. However, low fuel flow reduces the pressure, and it causes this code.
Also, it appears when the injector pumps and its controller malfunction.
P1762, P1763 and P1764
The Dodge variants have pressure governors which stabilize and regulate voltage. It can reduce or increases the engine pressure to monitor its speed.
Its current reduces when the electric circuit malfunctions. For example, it illuminates P1762, and high voltage cause P1763.
P1764 appears when the voltage level reduces to the lowest range.
P1689
It illuminates onto the truck instrument cluster when the truck’s electronic control module loses communication with the injection pump and its module.
Their reduced connection decreases the module efficiency for identifying the motor and transmission defects.
P1691 and P1690
The ECM crank and injection pump sensors do not combine their efficiencies, which results in P1691.
The fuel pump controller loses its calibration and illuminates P1690 on Dodge Ram.
P1696
The Powertrain module undergoes faults and does not read the key. As a result, it cannot write the electrically erasable programmable read-only memory.
In such circumstances, the truck screen shows P1696 and shows PCM malfunctioning.
P1693 and P1695
The turbocharging and control circuit of the truck breaks down. It causes P1693, which indicates the circuit faults.
The harness of the remote has fewer entry breaks and results in P1695.
P1719
Its engine has a skip-shift solenoid control circuit. It stabilizes truck fuel economy and reduces the motor’s high rotations. It makes gear shifting smooth and stable.
The solenoid damage affects PCM performance. P1719 appears when the skip shift circuit malfunctions.
P1697
It appears on the dashboard screen when the PCM undergoes damages and cannot identify the mileage. The PCM cannot record the odometer mileage, which illuminates this code on the Dodge Ram.
The faulty odometer can affect PCM performance because it lacks programming.
P1699 and P1698
The overheating of the engine cannot break down the gasket. The sealing material undergoes damage which leads to leakage.
In such circumstances, P1699 illuminates on display and indicates the leakage. However, the module does not receive a crystal clear display message from the built-in climate control system which triggers it.
The transmission control module fails when the electric wires break. Voltage overload and heating can break them down. You can access P1698 on the screen.
P1756 and P1757
The governor pressure is a specific force that puts pressure on the shifters and their valves. It facilitates the shifting of transmission through the balanced pressure.
Sometimes, the pressure level varies from the standard range. It changes from the target and does not equalize to the standard range.
This modification of governor pressure causes P1756. The pressure range can reach more than 5 PSI when the demand is low.
In such circumstances, the pressure range increases beyond the limit. It results in P1757 on the pickup truck.
P1765 and P1740
P1765 illuminates onto the instrument cluster while the solenoid circuit of transmission malfunctions. The 12V circuit changes and works at a different voltage.
It reduces circuit efficiency and continuous voltage flow. In such circumstances, you can see this code. P1740 is accessible when the electronic control unit identifies the malfunctioning of the torque converter clutch.
It is between the transmission control module and the truck ECU. It malfunctions when the heat range of the transmission fluid increases.
P1899
A park/neutral position switch activates the engine while you put the truck transmission in neutral. Sometimes, it does not come out for the parking gear, which results in P1899.
It does not leave the gear because of the component damage. It cannot use multiple gears, and transmission shifting reduces and affects speed.
P1830
A clutch pedal switch informs the electronic control unit about the engagement and disengagement of the Dodge cruise control.
Its cables and links break, and the clutch becomes loose. The debris accumulates in the hydraulic flow lines and breaks them.
The switch loses its standard abilities. It does not inform about the clutch movement to the electronic control unit, which triggers a code.
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