DerateVolvo Diesel ECM

MID 128 (FMI 1?)

Name: ECM Performance
Address: Fort Lauderdale, FL, 33325, US
Telephone: (888) 768-2447
Price range: $$-$$$

Engine protection and emissions inducement power-limiting faults.

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Active derate — truck is losing power now

System

Volvo Derate

Volvo ECM Service

Needs VerificationThis code as listed may be incomplete or non-standard (e.g. a partial code, placeholder term, or reference number rather than a confirmed fault code). Pull the exact code in the Cat ET tool before using this page for a repair decision.

Diagnostic Overview

Volvo entry MID 128 / possible FMI 1 or incomplete entry; verify with Tech Tool is not a complete diagnostic fault by itself. MID 128 generally identifies the engine control module, but a complete Volvo fault needs the related PID/PPID/SID/PSID/SPN and FMI or a full DTC string. Use this entry as a pointer to engine-controller diagnostics, not as a final code description.

Likely Causes

Incomplete code captured from dash display; missing PID/SPN/FMI detail; engine-controller fault stored with additional data; scan-tool translation issue.

What To Check First

Rescan with Premium Tech Tool or a heavy-duty scanner and record the full MID/PID/SPN/FMI or DTC, then diagnose the specific stored fault.

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Related Derate Fault Codes

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870E-00

Volvo fault entry 870E-00 (verify OEM format) appears to be an OEM-format or scan-tool translated DTC that should be verified before diagnosis.

MID 128

Volvo entry MID 128 (engine controller; fault detail not provided) is not a complete diagnostic fault by itself.

P009E-73

Volvo fault code P009E-73 can affect engine control and may contribute to a derate when the ECM receives implausible pressure, temperature, or control-system data.

P0110-13

Volvo fault code P0110-13 can affect engine control and may contribute to a derate when the ECM receives implausible pressure, temperature, or control-system data.

P204A-13

Volvo fault code P204A-13 can contribute to emissions inducement or derate because it is tied to DEF/SCR performance, reductant pressure, reductant dosing, or particulate/NOx-related monitoring.

P207F

Volvo fault code P207F can contribute to emissions inducement or derate because it is tied to DEF/SCR performance, reductant pressure, reductant dosing, or particulate/NOx-related monitoring.

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