Signal Too Low
Signal too low
Checking the status
- Ignition on.
Check whether the fault is permanent or intermittent by reading off the signal from the manifold absolute pressure (MAP) sensor.
Hint: The intake air temperature (IAT) sensor is integrated in the mass air flow (MAF) sensor.
Check that the signal is within its permitted range.
The fault is permanent if the signal is incorrect. The fault is intermittent if the signal is correct.
Continue - Checking the component and wiring
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Checking the component and wiring
Check the cable between engine control module (ECM) terminal #A4 (#A4) and heated oxygen sensor (HO2S) terminal #4. Check for a short-circuit to ground.
Remedy as necessary.
Other information
- Connecting the breakout box Connecting the Breakout Box
- Signal specification Signal Description / Specification
- Checking wiring and terminals Checking Wiring And Terminals
Continue - Verification
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Verification
Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off
- Reinstall the connectors, components etc.
- Ignition on.
Read off the signal from the manifold absolute pressure (MAP) sensor.
Check that the signal is within its permitted range.
Is the signal within its permitted range?
Yes - VERIFIED
No - VERIFICATION FAILED
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VERIFICATION FAILED - Fault-tracing information
VERIFIED - Fault Found
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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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