OBD Guide

P1D7D

Reactor Temperature Sensor Circuit Low Voltage

P1D7D is an OBD-II diagnostic trouble code meaning: Reactor Temperature Sensor Circuit Low Voltage. Common causes: reactor temperature sensor malfunction, open or short circuit in the circuit. Estimated repair cost: $17–56.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Increased fuel consumption
  • Unstable engine operation

Causes

  • Reactor temperature sensor malfunction
  • Open or short circuit in the circuit
  • Poor contact in the sensor connector
  • Problems with the engine control unit (ECU)

How to Fix

  1. Check the integrity of the sensor circuit
  2. Inspect the sensor connectors for corrosion or damage.
  3. Replace the reactor temperature sensor if necessary
  4. Check the operation of the engine control unit

Related codes

FAQ

What does the P1D7D code mean?

P1D7D is an OBD-II diagnostic trouble code that indicates: Reactor Temperature Sensor Circuit Low Voltage

What causes a P1D7D error code?

The most common causes of P1D7D include: Reactor temperature sensor malfunction; Open or short circuit in the circuit; Poor contact in the sensor connector; Problems with the engine control unit (ECU).

How do I fix a P1D7D diagnostic trouble code?

To fix P1D7D: Check the integrity of the sensor circuit. Inspect the sensor connectors for corrosion or damage.. Replace the reactor temperature sensor if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1D7D?

Yes, but get it checked soon

How much does it cost to fix P1D7D?

The estimated repair cost for P1D7D is $17–56. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat