P1238 – VOLVO

Code : P1238
Make : VOLVO
Description : P1238 VOLVO Turbocharger Control valve
Possible causes :
– Air leakage after turbocharger
– Hoses between turbocharger and turbocharger control valve are loose, blocked or damage
– Hoses between turbocharger control valve and pressure servo are loose, blocked or damage
– Faulty turbocharger control valve
– Faulty boo
Solutions :
– Carry out a Reset via CarDiag
– Choose a better quality fuel
– Check that the tank cap is securely closed
– Check the oil level and add more if it is lower than MAX
– Restart an Automatic diagnostic via CarDiag
– If the fault persists, you can check the “Possible causes” listed above : visually inspect (by yourself (tutorials to come) or by a professional) the wiring harness and the associated connectors, check for damaged components, and look for broken, bent, pushed, or corroded connector pins.

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