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.
DTC 88 - TDC Offset Error
This DTC indicates there is a pump timing problem. This DTC will set if TDC offset is greater than plus or minus 2 degrees, or the PCM has lost memory (TDC offset is stored in PCM memory). Check injection pump timing. If okay, program TDC OFFSET into PCM. When all diagnosis and repairs are complete, clear DTC's and verify operation.
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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.