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Automatic gearbox

P0988 Gearbox oil pressure sensor/switch: reading or operation not right ("E")

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P0988 means: Gearbox oil pressure sensor/switch: reading or operation not right ("E"). The automatic gearbox module has found a fault. Drive gently and have the car checked soon. The repair usually costs about €100–2500 in Estonia. The most common cause: gearbox oil low or old.

Is it safe to drive?Get it checked soonDrive gently and have the car checked soon.
Typical repair cost€100–2500parts and labour in Estonia

What it means

The automatic gearbox module has found a fault. The gearbox may go into limp mode: it holds one gear and shifts harshly or not at all. There is a signal, but the reading or operation isn't plausible. The cause may be the part itself or a real mechanical fault.

What you may notice

  • Stuck in one gear (limp mode)
  • Harsh or late gear changes
  • Gearbox slipping
  • Engine or gearbox light on

What could be wrong

  1. 1Gearbox oil low or old
  2. 2Gearbox solenoid or valve body
  3. 3Gearbox module or wiring
  4. 4Internal wear

Repair difficulty: Hard

What you can check yourself

Read the gearbox module's own codes too. If the gearbox slips, drive gently and don't tow a trailer. Best left to a workshop. It needs a diagnostic tool and experience.

How we fix it

  1. We read all gearbox codes and data
  2. We check oil level and condition
  3. We check connectors and wiring
  4. We replace the solenoid, sensor or oil, or repair the gearbox

Standard SAE description: Transmission Fluid Pressure Sensor/Switch "E" Circuit Range/Performance

This code usually comes with: Check engine lightSee what the light means →

Related symptoms: Loss of power or limp mode · Harsh shifts or slipping gearbox

Want a definite answer?

Bring the car to our workshop in Estonia for diagnostics. We read the fault codes, test the sensors and tell you what is wrong. Repair price depends on the work involved, generally €45 per hour.

Book a diagnostic check

Questions

What does fault code P0988 mean?

Gearbox oil pressure sensor/switch: reading or operation not right ("E"). The automatic gearbox module has found a fault. The gearbox may go into limp mode: it holds one gear and shifts harshly or not at all. There is a signal, but the reading or operation isn't plausible. The cause may be the part itself or a real mechanical fault.

Can I drive with code P0988?

Drive gently and have the car checked soon.

How much does it cost to fix P0988?

Roughly €100–2500 in Estonia. The price depends on exactly what has failed and on the car.

How is P0988 fixed?

We read all gearbox codes and data. We check oil level and condition. We check connectors and wiring. We replace the solenoid, sensor or oil, or repair the gearbox.

Related codes

P0989Gearbox oil pressure sensor/switch: signal or voltage too low ("E")P0987Gearbox oil pressure sensor/switch: circuit fault ("E")P0902Clutch actuator: signal or voltage too lowP0903Clutch actuator: signal or voltage too highP0904Gate select position sensor: circuit fault (gate select)P0500No signal from the speed sensorB1318Battery voltage too low (body module)

Based on AI combined with our hands-on workshop experience and knowledge. This information is general and prices are approximate (Estonian workshop rates). The same code can mean different things on different cars. Only an inspection of the car gives a definite answer.

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