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 MANUALSVOLVO2007XC90 AWD L6-3.2L VIN 98 B6324SREPAIR AND DIAGNOSISA L L DIAGNOSTIC TROUBLE CODES ( DTC )TESTING AND INSPECTIONP CODE CHARTSP1589DIAGNOSTIC TROUBLE CODE (DTC) INFORMATION
2007 Volvo XC90 AWD L6-3.2L VIN 98 B6324S
Diagnostic Trouble Code (DTC) Information
2007 Volvo XC90 AWD L6-3.2L VIN 98 B6324SSECTION Diagnostic Trouble Code (DTC) Information
Diagnostic trouble code (DTC) information ECM-P158900
Condition
Engine control module (ECM) checks the signals from the electronic throttle unit.
If engine control module (ECM) detects that feedback throttle position does not change, despite adjustment being performed, the diagnostic trouble code is generated.
The diagnostic trouble code can be diagnosed in specific operation situations.
Substitute value
- Cruise control turned off when malfunction is active.
- Feed to the electronic throttle unit shuts off, so that the throttle disc is turned to return position.
Possible source
- The throttle binds or is blocked (for example, oil film, dust, ice, etc.)
- Incorrectly adapted electronic throttle unit.
- Damaged electronic throttle unit.
- Damaged engine control module (ECM).
Fault symptom[s]
- Message in information display
- Poor performance.
- High idle rpm.
- The cruise control does not function at all
RENDER: 1.0x
NO RELATED
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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.