VOLVOUU Engine D12D AE E3 (Tier 3) Fault Code: PPID123 FMI 4 EPG 2 Start And Warmhold
DETECTION CONDITIONS:
The engine control unit (E-ECU) registers:
1. Output activated.
2. Voltage too low. (EB26)
SYMPTOM:
Engine brake continuously activated.
POSSIBLE CAUSES:
Short-circuit to frame ground between solenoid valve and E-ECU.
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