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 MANUALSVOLVO2004V70 L5-2.5L TURBO VIN 59 B5254T2REPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONMANUFACTURER CODE CHARTSECM CODES (ENGINE CONTROL MODULE)ECM-2100SIGNAL TOO HIGH
2004 Volvo V70 L5-2.5L Turbo VIN 59 B5254T2
Signal Too High
2004 Volvo V70 L5-2.5L Turbo VIN 59 B5254T2SECTION Signal Too High
Signal too high
Checking the status
- Ignition on.
Check whether the fault is permanent or intermittent by reading off the signal from the fuel pressure sensor.
With the engine at operating temperature and idling, the signal must be approximately 400 kPa.
The fault is permanent if the signal is incorrect.
The fault is intermittent if the signal is correct.
Continue - Checking components and wiring
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Checking components and wiring
Check the fuel pressure sensor connectors. Check for contact resistance and oxidation.
Check the signal cable between control module terminal #A2 (#A2) and fuel pressure sensor terminal #4. Check for a short-circuit to supply voltage. Check for an open-circuit.
Check the ground lead between control module terminal #A60 (#A60) and fuel pressure sensor terminal #1. Check for an open-circuit.
Remedy as necessary.
Try a new fuel pressure sensor if no fault is found during the above fault-tracing.
Other information:
- Checking wiring and terminals Checking Wiring And Terminals
- For resistance values, see Component specifications Specifications
- To connect the breakout box, see Connecting the breakout box, B5244T5, B5254T2 Connecting the Breakout Box
- For information about signals, see Signal specification Signal Description / Specification
- To access or replace the fuel pressure sensor, see Fuel pressure sensor, replacement, B5244T5, B5254T2 Service and Repair.
Continue - Verification
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Verification
Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Reinstall the connectors, components etc.
- Start the engine and run it to normal operating temperature
- Read off the fuel pressure sensor signal.
Check that the fuel pressure is approximately 400 kPa with the engine idling at operating temperature.
Is the fuel pressure correct?
Yes - VERIFIED
No - VERIFICATION FAILED
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VERIFIED - Fault Found
VERIFICATION FAILED - Fault-tracing information
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Fault-tracing information
Information
Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.
Do you want to exit fault-tracing?
Yes - FAULT-TRACING FAILED
No - Attempt New Test
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FAULT-TRACING FAILED - FAULT-TRACING FAILED
Attempt New Test - Checking the status
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RENDER: 1.0x
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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.