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 MANUALSVOLVO2004S80 L6-2.9L TURBO VIN 91 B6294TREPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONMANUFACTURER CODE CHARTSECM CODES (ENGINE CONTROL MODULE)ECM-2320SIGNAL MISSING. INTERMITTENT FAULT
2004 Volvo S80 L6-2.9L Turbo VIN 91 B6294T
Signal Missing. Intermittent Fault
2004 Volvo S80 L6-2.9L Turbo VIN 91 B6294TSECTION Signal Missing. Intermittent Fault
Signal missing. Intermittent fault
Checking wiring and connectors
Check the injector connector. Check for contact resistance and oxidation. Check for loose connections.
Check the cable between injector terminal 2 and control module:
- terminal #A16 (#A16) (ECM 2310)
- terminal #A15 (#A15) (ECM 2320)
- terminal #A33(#A33) (ECM 2330)
- terminal #A32 (#A32) (ECM 2340)
- terminal #A34 (#A34) (ECM 2350)
- terminal #A14 (#A14) (ECM 2360).
Check the power supply between system relay terminal 3 and injector terminal 1. Check for an for an intermittent open-circuit.
Other information
- To access or replace the engine control module (ECM), see Engine control module (ECM), replacing Service and Repair
- To access or replace the injector, see Injectors/pulsation dampers, replacing Service and Repair
- For information about signals, see Signal specification Signal Specification
- Checking wiring and terminals Checking Wiring And Terminals.
Continue - Fault-tracing information
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Fault-tracing information
Information
Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
It is possible to view the information again, or leave fault-tracing for this diagnostic trouble code (DTC).
Do you want to view the information again?
Yes - Attempt New Test
No - Exit fault-tracing
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Attempt New Test - Checking wiring and connectors
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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.