Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSDODGE AND RAM20241500 TRXREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 448 (DTC INDEX (1 OF 3))MODULE, AIR SUSPENSION CONTROL (ASCM)
2024 Dodge and Ram 1500 TRX
Module, Air Suspension Control (ASCM)
2024 Dodge and Ram 1500 TRXSECTION Module, Air Suspension Control (ASCM)
WARNING: This page is about a different car, the 2023 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| C008E-00 | ECU INTERNAL PERFORMANCE |
| C151E-11 | LEFT FRONT RIDE HEIGHT SENSOR - CIRCUIT SHORT TO GROUND |
| C151E-15 | LEFT FRONT RIDE HEIGHT SENSOR - CIRCUIT SHORT TO BATTERY OR OPEN |
| C151E-2A | LEFT FRONT RIDE HEIGHT SENSOR-STUCK |
| C151E-36 | LEFT FRONT RIDE HEIGHT SENSOR-SIGNAL FREQUENCY TOO LOW |
| C151E-37 | LEFT FRONT RIDE HEIGHT SENSOR-SIGNAL FREQUENCY TOO HIGH |
| C151E-76 | LEFT FRONT RIDE HEIGHT SENSOR - WRONG MOUNTING POSITION |
| C1522-11 | RIGHT FRONT RIDE HEIGHT SENSOR - CIRCUIT SHORT TO GROUND |
| C1522-15 | RIGHT FRONT RIDE HEIGHT SENSOR - CIRCUIT SHORT TO BATTERY OR OPEN |
| C1522-2A | RIGHT FRONT RIDE HEIGHT SENSOR-STUCK |
| C1522-36 | RIGHT FRONT RIDE HEIGHT SENSOR-SIGNAL FREQUENCY TOO LOW |
| C1522-37 | RIGHT FRONT RIDE HEIGHT SENSOR-SIGNAL FREQUENCY TOO HIGH |
| C1522-76 | RIGHT FRONT RIDE HEIGHT SENSOR - WRONG MOUNTING POSITION |
| C1526-11 | LEFT REAR RIDE HEIGHT SENSOR - CIRCUIT SHORT TO GROUND |
| C1526-15 | LEFT REAR RIDE HEIGHT SENSOR - CIRCUIT SHORT TO BATTERY OR OPEN |
| C1526-2A | LEFT REAR RIDE HEIGHT SENSOR-STUCK |
| C1526-36 | LEFT REAR RIDE HEIGHT SENSOR-SIGNAL FREQUENCY TOO LOW |
| C1526-37 | LEFT REAR RIDE HEIGHT SENSOR-SIGNAL FREQUENCY TOO HIGH |
| C1526-76 | LEFT REAR RIDE HEIGHT SENSOR - WRONG MOUNTING POSITION |
| C152A-11 | RIGHT REAR RIDE HEIGHT SENSOR - CIRCUIT SHORT TO GROUND |
| C152A-15 | RIGHT REAR RIDE HEIGHT SENSOR - CIRCUIT SHORT TO BATTERY OR OPEN |
| C152A-2A | RIGHT REAR RIDE HEIGHT SENSOR-STUCK |
| C152A-36 | RIGHT REAR RIDE HEIGHT SENSOR-SIGNAL FREQUENCY TOO LOW |
| C152A-37 | RIGHT REAR RIDE HEIGHT SENSOR-SIGNAL FREQUENCY TOO HIGH |
| C152A-76 | RIGHT REAR RIDE HEIGHT SENSOR - WRONG MOUNTING POSITION |
| C153A-01 | LEFT FRONT RIDE HEIGHT LEVEL CONTROL-GENERAL ELECTRICAL FAILURE |
| C153D-01 | RIGHT FRONT RIDE HEIGHT LEVEL CONTROL-GENERAL ELECTRICAL FAILURE |
| C1540-01 | LEFT REAR RIDE HEIGHT LEVEL CONTROL-GENERAL ELECTRICAL FAILURE |
| C1541-01 | AIR SUSPENSION REVERSE VALVE 3 CONTROL-GENERAL ELECTRICAL FAILURE |
| C1541-92 | AIR SUSPENSION REVERSE VALVE 3 CONTROL-PERFORMANCE OR INCORRECT OPERATION |
| C1542-01 | AIR SUSPENSION REVERSE VALVE 4 CONTROL-GENERAL ELECTRICAL FAILURE |
| C1542-92 | AIR SUSPENSION REVERSE VALVE 4 CONTROL-PERFORMANCE OR INCORRECT OPERATION |
| C1543-01 | RIGHT REAR RIDE HEIGHT LEVEL CONTROL-GENERAL ELECTRICAL FAILURE |
| C1556-16 | RIDE HEIGHT AIR PRESSURE SENSOR 1-CIRCUIT VOLTAGE BELOW THRESHOLD |
| C1556-84 | RIDE HEIGHT AIR PRESSURE SENSOR 1-SIGNAL BELOW ALLOWABLE RANGE |
| C1556-85 | RIDE HEIGHT AIR PRESSURE SENSOR 1-SIGNAL ABOVE ALLOWABLE RANGE |
| C1556-92 | RIDE HEIGHT AIR PRESSURE SENSOR 1-PERFORMANCE OR INCORRECT OPERATION |
| C1556-96 | RIDE HEIGHT AIR PRESSURE SENSOR - COMPONENT INTERNAL FAILURE |
| C1557-84 | RIDE HEIGHT AIR PRESSURE SENSOR 2-SIGNAL BELOW ALLOWABLE RANGE |
| C1557-85 | RIDE HEIGHT AIR PRESSURE SENSOR 2-SIGNAL ABOVE ALLOWABLE RANGE |
| C155E-92 | RIDE HEIGHT PRESSURE VENT CONTROL - PERFORMANCE OR INCORRECT OPERATION (OVERUSE DTC) |
| C1562-01 | RIDE HEIGHT AIR PUMP CONTROL- GENERAL ELECTRICAL FAILURE |
| C1560-97 | VENT VALVE-COMPONENT OR SYSTEM OPERATION OBSTRUCTED OR BLOCKED |
| C1561-97 | VALVE ASSEMBLY-COMPONENT OR SYSTEM OPERATION OBSTRUCTED OR BLOCKED |
| C1562-92 | RIDE HEIGHT AIR PUMP CONTROL - PERFORMANCE OR INCORRECT OPERATION (OVERUSE DTC) |
| C1566-92 | LEFT REAR RIDE HEIGHT LEVEL PERFORMANCE - PERFORMANCE OR INCORRECT OPERATION (OVERUSE DTC) |
| C1567-92 | RIGHT REAR RIDE HEIGHT LEVEL PERFORMANCE - PERFORMANCE OR INCORRECT OPERATION (OVERUSE DTC) |
| C1568-92 | LEFT FRONT RIDE HEIGHT LEVEL PERFORMANCE - PERFORMANCE OR INCORRECT OPERATION (OVERUSE DTC) |
| C1569-92 | RIGHT FRONT RIDE HEIGHT LEVEL PERFORMANCE - PERFORMANCE OR INCORRECT OPERATION (OVERUSE DTC) |
| C156E-00 | RIDE HEIGHT SYSTEM CALIBRATION PERFORMANCE |
| C159E-84 | AIR PUMP TEMPERATURE SENSOR 1-SIGNAL BELOW ALLOWABLE RANGE |
| C159E-85 | AIR PUMP TEMPERATURE SENSOR 1-SIGNAL ABOVE ALLOWABLE RANGE |
| C159E-92 | AIR PUMP TEMPERATURE SENSOR 1-PERFORMANCE OR INCORRECT OPERATION |
| C159F-01 | AIR SUSPENSION REVERSE VALVE 1 CONTROL-GENERAL ELECTRICAL FAILURE |
| C159F-92 | AIR SUSPENSION REVERSE VALVE 1 CONTROL - PERFORMANCE OR INCORRECT OPERATION (OVERUSE DTC) |
| C15A0-01 | AIR SUSPENSION REVERSE VALVE 2 CONTROL-GENERAL ELECTRICAL FAILURE |
| C15A0-92 | AIR SUSPENSION REVERSE VALVE 2 CONTROL - PERFORMANCE OR INCORRECT OPERATION (OVERUSE DTC) |
| C15A1-00 | UNABLE TO OBTAIN DESIRED RIDE HEIGHT |
| C15A7-2A | AIR SUSPENSION UP BUTTON-STUCK |
| C15A8-2A | AIR SUSPENSION DOWN BUTTON - STUCK |
| C15A9-00 | HEIGHT SENSOR MECHANICAL PERFORMANCE |
| C15AA-00 | AIR LEAK DURING VENT |
| C15AE-00 | COMPRESSOR PRESSURE LINE LEAK- |
| C15CF-84 | AIR PUMP TEMPERATURE SENSOR 2-SIGNAL BELOW ALLOWABLE RANGE |
| C15CF-85 | AIR PUMP TEMPERATURE SENSOR 2-SIGNAL ABOVE ALLOWABLE RANGE |
| C15D9-00 | LOW AIR MASS |
| C15DA-00 | PAYLOAD LIMIT EXCEEDED |
| C2110-11 | SENSOR SUPPLY 1 VOLTAGE - CIRCUIT SHORT TO GROUND |
| C2110-12 | SENSOR SUPPLY 1 VOLTAGE - CIRCUIT SHORT TO BATTERY |
| C211B-92 | IGNITION RUN/START INPUT CIRCUIT PERFORMANCE - PERFORMANCE OR INCORRECT OPERATION |
| C212A-16 | SYSTEM VOLTAGE LOW - CIRCUIT VOLTAGE BELOW THRESHOLD |
| C212A-17 | SYSTEM VOLTAGE HIGH - CIRCUIT VOLTAGE ABOVE THRESHOLD |
| C212C-11 | SUSPENSION VALVE POWER SUPPLY VOLTAGE - CIRCUIT SHORT TO GROUND |
| C212C-12 | SUSPENSION VALVE POWER SUPPLY VOLTAGE - CIRCUIT SHORT TO BATTERY |
| C2202-00 | ORIGINAL VIN MISMATCH / MISSING |
| C2206-00 | VEHICLE CONFIGURATION MISMATCH- |
| C220C-00 | ACTIVE SUSPENSION MODULE INTERNAL |
| C2212-00 | ECU IN - PLANT MODE |
| U0001-00 | CAN C BUS |
| U0100-00 | LOST COMMUNICATION WITH ECM/PCM |
| U0121-00 | LOST COMMUNICATION WITH ANTI-LOCK BRAKE SYSTEM (ABS) CONTROL MODULE |
| U0137-00 | LOST COMMUNICATION WITH TRAILER BRAKE CONTROL MODULE |
| U0140-00 | LOST COMMUNICATION WITH BODY CONTROL MODULE |
| U0155-00 | LOST COMMUNICATION WITH CLUSTER-CCN |
| U0401-00 | IMPLAUSIBLE DATA RECEIVED FROM ECM/PCM |
| U0402-00 | IMPLAUSIBLE DATA RECEIVED FROM TCM |
| U0415-00 | IMPLAUSIBLE DATA RECEIVED FROM ABS |
| U0422-00 | IMPLAUSIBLE DATA RECEIVED FROM BODY CONTROL MODULE |
| U0423-00 | IMPLAUSIBLE DATA RECEIVED FROM CLUSTER/CCN |
| U0429-00 | IMPLAUSIBLE DATA RECEIVED FROM SCM |
| U0438-00 | IMPLAUSIBLE DATA RECEIVED FROM TRAILER CONTROL MODULE |
| U1489-00 | IMPLAUSIBLE DATA RECEIVED FROM RF HUB- |
| U110A-00 | LOST COMMUNICATION WITH SCM - CAN-C- |
| U11B9-00 | LOST COMMUNICATION WITH RF HUB |
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.