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Volvo Engine D13F Fault Code: EF3601 Performance Loss Bus Communication Failure

Dec 21, 2025

Volvo Engine D13F Fault Code: EF3601 Performance Loss Bus Communication Failure

SHOP TALK CONTAINS CRITERIA FOR THE FOLLOWING:
1. Instrument Control Unit (HMIM)
2. Vehicle Control Unit (V-ECU)
3. Vehicle Control Unit 2 (V2-ECU)

INSTRUMENT CONTROL UNIT (HMIM)
DETECTION CONDITIONS:
The Instrument Control Unit (HMIM) registers that bus communication is missing with E-ECU on CAN1/J1939.

SYMPTOM:
None

POSSIBLE CAUSES:
Open circuit on bus communication (cable harness) (SAE J1939 CAN1).

VEHICLE CONTROL UNIT (V-ECU)
DETECTION CONDITIONS:
The Vehicle Control Unit (V-ECU) registers that bus communication is missing with ECC on J1708/J1587.

SYMPTOM:
The climate control unit does not work correctly.

POSSIBLE CAUSES:
1. Ongoing diagnostic software operation: Parameter programming ECU, Programming.
2. Open circuit on information link.
3. Defective ECU ECC-ECU.

VEHICHLE CONTROL UNIT 2 (V2-ECU)
DETECTION CONDITIONS:
The Vehicle Control Unit 2 (V2-ECU) registers that bus communication is missing with E-ECU on CAN1/J1939.

SYMPTOM:
Response problem Messages are read/sent instead on J1708/J1587.

POSSIBLE CAUSES:
Open circuit on bus communication (cable harness) (SAE J1939 CAN1).

Cummins ISB CM850 (2003-06) Fault Code: 2976 PID: SPN: 3361 FMI: 2 Dosing Control Unit Temperature – Data Erratic, Intermittent, or Incorrect. An internal error has been detected in the catalyst dosing control unit.

Cummins ISB CM850 (2003-06) Fault Code: 2973 PID: 102 SPN: 102 FMI: 2 Intake Manifold Pressure Sensor Circuit – Data Erratic, Intermittent, or Incorrect. The electronic control module (ECM) has detected an intake manifold pressure signal that is too high or too low for present engine operating conditions.

Cummins ISB CM850 (2003-06) Fault Code: 2964 PID: 105 SPN: 105 FMI: 15 Intake Manifold Temperature High – Data Valid But Above Normal Operating Range – Least Severe Level. Intake manifold air temperature signal indicates intake manifold air temperature above engine protection warning limit.

Cummins ISB CM850 (2003-06) Fault Code: 2963 PID: 110 SPN: 110 FMI: 15 Engine Coolant Temperature High – Data Valid but Above Normal Operational Range – Least Severe Level. Engine coolant temperature signal indicates coolant temperature is above the engine coolant temperature engine protection warning limit.

Cummins ISB CM850 (2003-06) Fault Code: 2962 PID: 412 SPN: 412 FMI: 0 EGR Temperature – Data Valid But Above Normal Operating Range, Moderately Severe Level.

Cummins ISB CM850 (2003-06) Fault Code: 2961 PID: 412 SPN: 412 FMI: 15 Exhaust Gas Recirculation (EGR) temperature – Data Valid but Above Normal Operating Range, Least Severe Level.

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Volvo Engine D13F Fault Code: EF3602 Critical Bus Communication Failure

Dec 21, 2025

Volvo Engine D13F Fault Code: EF3602 Critical Bus Communication Failure

SHOP TALK CONTAINS CRITERIA FOR THE FOLLOWING:
1. Instrument Control Unit (HMIM)
2. Vehicle Control Unit (V-ECU)
3. Vehicle Control Unit 2 (V2-ECU)

INSTRUMENT CONTROL UNIT (HMIM)
DETECTION CONDITIONS:
The Instrument Control Unit (HMIM) registers:
1. That bus communication is missing with E-ECU on J1708/J1587.
2. That bus communication is missing with V-ECU on J1708/J1587.
3. That bus communication is missing with V-ECU on CAN1/J1939 + that bus communication is missing with V-ECU on CAN2/J1939.
4. That bus communication is missing with V2-ECU on CAN1/J1939 + that bus communication is missing with V2-ECU on CAN2/J1939.

SYMPTOM:
1. Starter motor cannot be activated.
2. The machine does not go into gear.

POSSIBLE CAUSES:
1. Ongoing diagnostic software operation: ECU, Programming Parameter programming.
2. Open circuit on bus communication (cable harness).
3. Short-circuit to frame ground or voltage.
4. Leads in cable harness short-circuited to each other.
5. Defective ECU.

VEHICLE CONTROL UNIT (V-ECU)
DETECTION CONDITIONS:
The Vehicle Control Unit (V-ECU) registers:
1. That bus communication is missing with HMIM on J1708/J1587.
2. That bus communication is missing with E-ECU on CAN1/J1939.
3. That bus communication is missing with HMIM on CAN1/J1939 + that bus communication is missing with HMIM on CAN2/J1939.
4. That bus communication is missing with V2-ECU on CAN1/J1939 + that bus communication is missing with V2-ECU on CAN2/J1939.

SYMPTOM:
1. Starter motor cannot be activated.
2. The machine does not go into gear.

POSSIBLE CAUSES:
1. Ongoing diagnostic software operation: ECU, Programming Parameter programming.
2. Open circuit on bus communication (cable harness).
3. Short-circuit to frame ground or voltage.
4. Leads in cable harness short-circuited to each other.
5. Defective ECU.

VEHICHLE CONTROL UNIT 2 (V2-ECU)
DETECTION CONDITIONS:
The Vehicle Control Unit 2 (V2-ECU) registers:
1. That bus communication is missing with E-ECU on CAN1/J1939 + that bus communication is missing with E-ECU on J1708/J1587.
2. That bus communication is missing with HMIM on CAN1/J1939 + that bus communication is missing with HMIM on CAN2/J1939.
3. That bus communication is missing with V-ECU on CAN1/J1939 + that bus communication is missing with V-ECU on CAN2/J1939.