The most common causes of P1229 include: Sensor failure or signal out of range; Wiring harness damage or loose connection; Control module software issue; Vacuum leak or air intake restriction. A professional OBD-II scan tool is recommended for accurate diagnosis.

How do I fix P1229 for Ford E-Transit?

Recommended steps to address P1229: (1) Monitor the situation and service at your next scheduled visit (2) Check and replace the affected sensor if confirmed faulty (3) Inspect wiring and connectors for damage. Always consult a qualified EV technician for high-voltage system repairs.

Is it safe to drive with P1229?

P1229 is a caution-level code. It is generally safe to continue driving short distances, but have it inspected at your next scheduled service visit.

Ford E-Transit

P1229

Caution

Throttle Position Sensor B Out Of Self Test Range

Severity

Caution

What does P1229 mean?

Fault code P1229 means "Throttle Position Sensor B Out Of Self Test Range". It is a manufacturer-specific diagnostic trouble code (DTC) in the powertrain system, classified as "powertrain" with a severity level of "caution". This is a lower-severity code that should be monitored. Have it checked at your next regular service appointment. This code is defined by the SAE J2012 / ISO 15031-6 standard and applies to OBD-II compliant vehicles sold in the US, EU, and other global markets. [Ford EV-specific: Supercharger Intercooler Pump Not Operating Condition. Applies to: Mustang Mach-E, F-150 Lightning, E-Transit]

Possible Causes

Sensor failure or signal out of range
Wiring harness damage or loose connection
Control module software issue
Vacuum leak or air intake restriction

Recommended Actions

1 Monitor the situation and service at your next scheduled visit
2 Check and replace the affected sensor if confirmed faulty
3 Inspect wiring and connectors for damage

This code applies to all vehicles. View generic P1229 information →