P0988: Transmission Fluid Pressure Sensor/Switch E Circuit Range/Performance

What does P0988 mean?

P0988 is a diagnostic trouble code indicating "Transmission Fluid Pressure Sensor/Switch E Circuit Range/Performance". The sensor or component is providing readings, but they fall outside the expected operating range. The part may be degraded, contaminated, or experiencing intermittent issues affecting transmission performance.

Symptoms you may notice

• Check engine light (MIL) illuminated on dashboard
• Harsh or delayed gear shifts
• Transmission slipping
• Vehicle stuck in one gear (limp mode)
• Intermittent warning lights

Common causes

• Worn or contaminated transmission component
• Vacuum leak or intake air leak
• Clogged filter or restricted flow
• Intermittent electrical connection issue

What should you do?

Schedule a diagnostic appointment at your earliest convenience. The vehicle is generally safe to drive short distances, but the underlying issue should be addressed to prevent it from worsening.