P0722 Isuzu Code - Output Speed Sensor No Signal
Quick Answer
The speed sensor detects the revolution of the idler gear parking pawl lock gear and emits a pulse signal. Common causes include Faulty Speed Sensor, Speed Sensor harness is open or shorted, Speed Sensor circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0722 Isuzu indicates Output Speed Sensor No Signal.
- Common causes
- Common causes include Faulty Speed Sensor, Speed Sensor harness is open or shorted, Speed Sensor circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0722 Isuzu Description
What are the Possible Causes of the DTC P0722 Isuzu?
- Faulty Speed Sensor
- Speed Sensor harness is open or shorted
- Speed Sensor circuit poor electrical connection
How to Fix the DTC P0722 Isuzu?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0722 Isuzu code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0722 Isuzu Code
1. What does the OBDII code P0722 mean on an Isuzu?
P0722 indicates that the transmission control module (TCM) is not receiving a signal from the output speed sensor, which helps monitor the transmission's rotational speed.
2. What are the symptoms of P0722 on an Isuzu?
Common symptoms include erratic shifting, transmission slipping, poor acceleration, reduced fuel efficiency, and the illumination of the check engine light.
3. What causes the P0722 code on an Isuzu?
Causes can include a faulty output speed sensor, damaged wiring or connectors, a malfunctioning transmission control module, or internal transmission issues.
4. Can I drive my Isuzu with the P0722 code?
While the vehicle may still be drivable, driving with P0722 can lead to further transmission damage or unsafe driving conditions due to erratic shifting.
5. How do you diagnose the P0722 code on an Isuzu?
Diagnosis involves inspecting the output speed sensor, checking for damaged wiring or connectors, testing the sensor's voltage, and scanning the TCM for additional errors.
6. How do you fix the P0722 code on an Isuzu?
Repairs may include replacing the output speed sensor, repairing damaged wiring, cleaning connectors, or reprogramming or replacing the TCM if necessary.
7. How much does it cost to fix the P0722 code on an Isuzu?
The repair cost varies depending on the issue but typically ranges from $150 to $400 for sensor replacement, with additional costs for wiring repairs or TCM replacement.
8. What happens if the output speed sensor fails completely?
If the sensor fails entirely, the transmission may enter "limp mode," which limits performance to protect the vehicle from further damage.
9. Can a dirty or faulty connector cause the P0722 code on an Isuzu?
Yes, a dirty or corroded connector can disrupt the signal from the output speed sensor, triggering the P0722 code.
10. Is the output speed sensor easy to replace on an Isuzu?
In most cases, the output speed sensor is relatively easy to replace, typically located on the transmission housing, but the procedure may vary by model.
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