Alternative Fuel Control Module
Manages a liquefied petroleum gas or compressed natural gas system on a converted vehicle, running alongside the original petrol management rather than replacing it. Aftermarket by definition, so the quality of the installation matters as much as the equipment, and faults are best taken to the installer or a conversion specialist — manufacturer tooling does not cover it. The vehicle normally reverts to petrol when it fails, which is the designed fallback.
Also known as: lpg ecu, gas ecu, cng module, lpg control unit, autogas ecu
Referenced by 135 codes
Codes involving this component (135)
- P2665 Fuel Shutoff Valve B Control Circuit/Open High
- P2666 Fuel Shutoff Valve B Control Circuit Low High
- P2667 Fuel Shutoff Valve B Control Circuit High High
- P2A22 Alternative Fuel Tank Shutoff Valve B Control Circuit/Open High
- P2A23 Alternative Fuel Tank Shutoff Valve B Control Circuit Performance/Stuck Off High
- P2A24 Alternative Fuel Tank Shutoff Valve B Control Circuit Low High
- P2A25 Alternative Fuel Tank Shutoff Valve B Control Circuit High High
- P2A26 Alternative Fuel Tank Shutoff Valve C Control Circuit/Open High
- P2A27 Alternative Fuel Tank Shutoff Valve C Control Circuit Performance/Stuck Off High
- P2A28 Alternative Fuel Tank Shutoff Valve C Control Circuit Low High
- P2A29 Alternative Fuel Tank Shutoff Valve C Control Circuit High High
- P2A2A Alternative Fuel Tank Shutoff Valve D Control Circuit/Open High
- P2A2B Alternative Fuel Tank Shutoff Valve D Control Circuit Performance/Stuck Off High
- P2A2C Alternative Fuel Tank Shutoff Valve D Control Circuit Low High
- P2A2D Alternative Fuel Tank Shutoff Valve D Control Circuit High High
- P2A2E Alternative Fuel Tank Shutoff Valve E Control Circuit/Open High
- P2A2F Alternative Fuel Tank Shutoff Valve E Control Circuit Performance/Stuck Off High
- P2A30 Alternative Fuel Tank Shutoff Valve E Control Circuit Low High
- P2A31 Alternative Fuel Tank Shutoff Valve E Control Circuit High High
- P2A32 AFCM Power Relay Control Circuit/Open High
- P2A33 AFCM Power Relay Control Circuit Low High
- P2A34 AFCM Power Relay Control Circuit High High
- P2A35 AFCM Power Relay Sense Circuit High
- P2A36 AFCM Power Relay Sense Circuit Low High
- P2A37 AFCM Power Relay Sense Circuit High High
Other components in Fuel Delivery
- Fuel Injector 530
- Fuel Injector Control Module 148
- High-Pressure Fuel Pump 79
- Fuel Rail Pressure Sensor 77
- Fuel Pump 48
- Fuel Volume Regulator 46
- Fuel Temperature Sensor 45
- Fuel Filter 43
- Fuel Level Sensor 27
- Fuel Pump Control Module 22
- Fuel Shutoff Valve 14
- Injection Pump 13
- Injection Control Pressure Sensor 12
- Fuel Composition Sensor 11
- Injection Pressure Regulator 10
- High-Pressure Oil Pump 8
- Air Assist Control Valve 6
- Water in Fuel Sensor 6
- Fuel Transfer Pump 6
- Fuel Supply Heater 3
- Fuel Pump Strainer 2
Information, not instruction
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
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